Gal. 5:24 Those who belong to Christ Jesus have nailed the passions and desires of their sinful nature to his cross and crucified them there.
The message is clear: if you belong to Christ, you will no longer be controlled and driven by sinful desires and passions. There will be an awareness of the wrongfulness of sinful behavior, thoughts, and attitudes. There will be a sensitivity to what pleases God and what doesn't. Granted, we grow into our awareness, but grow we will.
Without the help of Christ, we are slaves to our sinful nature. We will sin naturally. It is not something we can do anything about. Jesus changes our desires; He changes our character. His presence prevents our sinful nature from rearing its ugly head.
Our ability to resist the temptations to sin is directly related to our relationship with Christ. If you are having problems with sin in your life, you need to draw closer to the Lord. You cannot sin as long as He is near to your heart and in your heart. Think about it for a moment. Whenever you sin, it's because the presence of sin is more powerful at the moment than the presence of Christ to you. The only way we can resist the urge to sin is to reclaim Christ's presence at the moment. Sinning is a choice and therefore a responsibility we can't avoid. You have no one to blame but yourself when you fall into sin. Satan has no more power over you than you let him have.