You are God's Righteousness through Christ, not by Works.

Sinners are sinners not because of what they do but because of the race from which they came. For ALL have sinned and have come short of the glory of God (Rom 3:23). The Word of Life says that through one man, sin entered the world, and everyone became sinners because of the first(one) man who sinned, Sinful race, Adam . Wherefore, as by one man sin entered into the world, and death by sin; and so death passed upon all men, for that all have sinned:Romans 5:12 (KJV)
Therefore, either you have ever done sinful stuffs all your life or NOT, you are a sinner as long as you came through the one man by whom sin entered the world.

By another one man, those who believe on Him (Jesus Christ) become the righteousness of God (2Cor 5:21). So you are the Righteousness of God not because of what you do (act right) but because of the race from which you came, the RACE of RIGHTEOUSNESS. For if through the offence of one many be dead, much more the grace of God, and the gift by grace, which is by one man, Jesus Christ, hath abounded unto many. Romans 5:15 (KJV). Through faith in Jesus Christ, sinners become the RIGHTEOUSNESS of God in Christ, not because they acted right but because they received a GIFT. For if by one man's offence death reigned by one; much more they which receive abundance of grace and of the gift of righteousness shall reign in life by one, Jesus Christ.)Romans 5:17 (KJV)

Having received righteousness as a gift, we need not try to maintain it by Works because we did not get it by works. In the first place,we received it by faith and we are to maintain it by faith. Just keep believing. Amen.