Before salvation we are subject to a sin nature that we have no power to defeat; in fact, all we can do is sin and we are unable not to sin. Roman poet Ovid said, "I know the good and approve it, but I follow the worst." Paul summed up the plight of man in Romans 7:24 (ESV) as: "Wretched man that I am. Who will deliver me from the body of this death?" "Can the Ethiopian change his skin or the leopard his spots? Then also you can do good who are accustomed to do evil" (Jeremiah 13:23, ESV). "All our righteousness is as filthy rags" (cf. Isaiah 64:6) and counts as nothing compared to the purity of God's standards, which are manifest in Christ's person.
All we need to know of righteousness is exemplified and personified in Him, the exact replica and image of God (cf. Col. 1:15). Our good works, done in the flesh, count for nothing at Judgment Day and are praiseworthy by our fellow man, who gives us his kudos and; however, they count for nothing in God's eyes, namely because they were done with the wrong motives and God takes this into consideration (cf. Proverbs 21:2)--most men do good deeds simply for the applause and acceptance of man and to ingratiate himself in God's eyes; however, there is nothing we can do to gain God's favor or to "brownnose" God.
We are all in the same boat and lumped together (cf. Rom. 3:23), regardless of our own assessment or appraisal, or of what others think considering their evaluation and estimation of our worthiness. What is esteemed in men's eyes is despised in God's eyes; for man admires high self-esteem and self-respect, not God-esteem and God-respect, and even individualism and independence--"lift yourself up by your own bootstraps," which is a do-it-yourself proposition common to all religion, on good works to gain the approbation of God. We couldn't be worse off in God's estimation of man--note that our total depravity of heart, will, and mind is God's estimation of man, not man's estimation of man. The grip of our sin nature or depravity must be solved threefold: its ignorance by virtue of Christ the Prophet, its guilt by virtue of Christ the Priest, and its dominion by virtue of Christ the King.
God is not against good works per se, for they benefit us and we all owe a lot to so-called good men who have contributed to our well-being, but they are not good enough to gain entree into God's heaven or for salvation itself. But God is indeed against good deeds done in the power of the flesh, by man's own effort and strength, as opposed to those done in the power of the Spirit, of which are worthy of reward at the bema (Greek for judgment seat) or tribunal of Christ (cf. 2 Cor. 5:10; Romans 14:10-12). Jesus said, "Apart from Me you can do nothing..." (cf. John 15:5). God must give us the power (cf. Phil. 4:13 says, "I can do all things through Christ...") to do works in His name (cf. Isaiah 26:12 says: "...[You] have done for us all our works"--only that which is done by the power of the Spirit and in His name is worthy of reward, and this goes for believers as well, as 1 Cor. 3:15 indicates that some of their works are only "wood, hay, and stubble" and will burn up in the fire of judgment and the believer will suffer loss of reward, though he is saved as if by fire.
Cain was warned by God in Genesis 4:7 that sin "crouches at the door" and waits to destroy him and we must all realize this: We are still subject to our sin nature as believers and must constantly renew ourselves in the filling of the Spirit--it's not a one-time event, but a continuing experience of being filled [cf. Eph. 5:18]. Even Christians can and do backslide, but God can heal them of this tendency, inclination, and weakness--He will heal the backslider (Hosea 14:4 says, "I will heal their backsliding, I will love them freely"). "But I say, walk by the Spirit, and you will not gratify the desires of the flesh" (Gal. 5:16, ESV). Hosea says that "sin has been your downfall." Yes, we still have sin in us as believers and this is the old man or old sin nature, the result of Adam's sin which we inherit as original sin.
We are no longer inclined to do good but must walk in the Spirit to overcome the evil one. Many Christians do live defeated lives and have never learned to walk with the Lord in fellowship, even as Enoch and Noah did. We must all realize our area of weakness--the sin which so easily besets us, according to Hebrews 12:1--and admit our shortcomings and failures to God--to come clean in repentance. We have no one to blame but ourselves, for we are our own worst enemy and shouldn't be blaming the devil-like they say, "The devil made me do it!" We have no one to blame but ourselves for our failures, because God is on our side and, as believers, we have power over sin and to overcome the sin nature.
Unfortunately, some believers are recurrent backsliders and God says to them: "... Your sins have been your downfall!" (Cf. Hos. 14:1, NIV). We are not punished for our sins, nor for our parents' sins--we are punished by our sins, and God doesn't deliver us from their natural consequences because we still sow what we reap and take responsibility for our own behavior--just because a thief is forgiven, doesn't mean God is going to keep him from jail time.
The only way to be set free is to know Christ: "If the Son shall set you free, you shall be free indeed!" (Cf. John 8:36). Unbelievers have no power over sin and act according to their nature, though everyone isn't equally as bad, they are all as equally bad off--we cannot save ourselves nor do any pre-salvation work! We are all totally depraved in all of our being and nature, though we are not utterly depraved or as bad as we can be. It has been said by theologians that we are not sinners because we sin; we sin because we are sinners!
Man is only acting naturally when he sins just like Satan is acting according to his nature when he lies, for he is a liar and the father of liars, and there is no truth in him. The sequence of salvation is that at conversion we are set free from the penalty of sin, in time from the power of sin, and in eternity from the presence of sin. In other words, we have been saved from sin, we are being saved from sin, and we will be saved from sin (our position, condition, and expectation).
The whole point of the Christian life is a changed life or a conversion experience--although some regard this as an acceptable way to have a nervous or mental breakdown now, it is an experience to be reckoned with and that is as dramatic as a cowboy changing hitching posts because of his change of attitude and no longer visits the brothel or saloon, and instead attends chapel. We learn to hate sin as God hates it and to love righteousness as God does, and as we get to know God and love God, we want to be like Him. We are all works in progress, but there is a dramatic change that occurs as a testimony of the conversion experience.
Therefore,we must learn to be patient with other believers because God isn't finished with them yet! God is working on us like a silversmith purifies his silver: When he sees himself he is done! God wants to see Himself in us and won't stop working on us till He does: "Christ in you, the hope of glory" (cf. Col. 1:27). God is like a sculptor who makes a figurine out of a slab of marble and does it by taking away everything that doesn't resemble the figurine. Some people are just more challenging and have a further way to go, by virtue of less virtue or faith, but God is determined to make all of us in Christ's image.
Man is no free spirit (however, he's a free moral agent) that can do as he wills and come to God in his own power and free will, God must woo him and draw him to the cross and do a work of regeneration in his heart of repentance and faith--no one would come to Christ of their own power; it is totally of grace and Soli Deo Gloria, or to God alone be the glory. It is by grace alone, through faith alone, in the person and work of Christ alone, with the Scripture as the authority alone, and God alone getting the glory. It is summed up in the monergistic (not cooperative) and not a synergistic (co-operative) phrase of Jonah: "Salvation is of the Lord." It is not a cooperative venture, whereby we get a little of the credit, but God works it in us and sovereignly saves us totally by grace and not merit of any kind. There are only three possibilities: Of man alone; of God and man; or of God alone.
The first is religion, the second is legalism, and the third alone is total grace. As Paul says in Romans 5:21 that "grace reigns through righteousness." God's grace is irresistible and efficacious or does what He intends--make believers out of us and change our hearts of stone into hearts of flesh (cf. Ezek. 36:26). God's grace always works the desired result (cf Romans 5:21), unlike man's work, and is never in vain--you can resist the Holy Spirit and harden your heart, but not God's gracious work in your heart, no more than you can resist the woman of your dreams.
It is an ill-conceived to think we are "born free" and have "spiritual" free will--we must be set free! We aren't saved by an act of the will: "So then it depends not on human will or exertion, but on God, who has mercy" (Romans 9:16, ESV). "[F]or it is God who works in you, both to will and to work for his good pleasure" (Phil. 2:13, ESV). We don't need free wills to be saved, but wills made free (even our wills our stubborn, rebellious, and depraved and incapable of pleasing God without God quickening of faith in them--we were dead in trespasses and sins (cf. Eph. 2:1) and God made us alive, and a dead person can do nothing to please God!
We had no inclination to come to Christ and no desire for Him until God worked this grace in us and granted us the privilege of coming to Christ: "No man can come to me unless the Father, who sent me, draws him," and "No man can come to me unless it has been granted of the Father" (cf. John 6:44). These are hard sayings and many believers stumble over them and cannot accept that God is ultimately in charge of our destiny--they like to think they are in control of things; however, God is sovereign over all and what kind of God would He be if He weren't? Note Romans 9:19 (ESV) that says, "... 'Why does he still find fault? For who can resist his will?'" "Christ is the Captain of our soul and the Master of our fate."
Man's so-called free will doesn't limit God's sovereignty, and God is the one who made the final choice as to whom He would save--called His elect in Scripture. It is an important point of doctrine that Romans 8:30 (ESV), which says : "[A]nd those whom he predestined he also called...," militates against the prescient view that God elects us because we believe, but God elects us unto faith, I repeat, not because of our faith! He can make a believer out of anyone if it's His will (Tyre and Sidon would've repented had they seen Christ's miracles!). But people are still responsible for rejecting God and are personally accountable at Judgment Day because God didn't impel nor compel them to reject Him--they rejected whatever light they had.
We all have feet of clay or weaknesses not readily apparent and we cannot be good until we realize how bad we are or how bad off we are, and we will never realize this unless we attempt to be good and find out the power sin has over us as a master. We never ceased to be human who can make choices, but we ceased to be good with any inclination toward God--no inherent goodness (we are not basically good!). In Reformed theology, man, left to himself, will not choose God, and we didn't choose Him, He chose us (cf. John 15:16). As Blaise Pascal said: "I would not have searched for Thee if Thou hadst not found me."
We can be glad though: God doesn't grade on a curve and we all fall short of His holiness, and He sees through the veneer to our solidarity in Adam. It's not that we are good enough to be saved, but bad enough to need salvation! Of course, if the run-of-the-mill sinner compares himself to Adolf Hitler, he would think himself a saint, but the standard we are held to is Christ, and He doesn't grade on a curve! Indeed, we must recognize that we are bad, but not too bad to be saved! Caveat: Freedom in Christ is not permission to live in the flesh, but the power to live in the Spirit! And remember we have nothing to boast: "For who makes you different from anyone else? What do you have that you did not receive? ..." (1 Cor. 4:7, NIV). Soli Deo Gloria!