Admit to God that you have sinned against Him. The Bible states that we are all born in sin, as long as we live on this earth, we will fall in to sin. Admitting our sin helps us to realize the need for a Savior, Jesus Christ.
The Bible says:
Romans 3:23 “All have sinned and fall short of the glory of God.”
Romans 6:23 “The wages of sin is death (everlasting punishment), but the gift of God is eternal life in Christ Jesus our Lord.”