Galatians 5: 17
For the sinful nature desires what is contrary to the Spirit, and the Spirit what is contrary to the sinful nature. They are in conflict with each other, so that you do not do what you want.
As a christian, when we are tempted to do sin, we have the urge to have self control and not do it. However, if the temptation is strong, there might be times that we know it is wrong but we ended up doing it… when the sin is done, we are convicted and think that “ why did i do that? I know it is wrong… I do not want to do it.”
This was because the Spirit of God is contrary to our flesh or sinful nature. That is why we need o have wisdom always and pray for Gods’ guidance and to always ask the Holy Spirit to give us the manifestations of its fruits like having self-control.