A. Are sorry for their sins - 2 Corinthians 7:10
B. Are willing to turn away from their sins - Acts 3:19
C. Have faith (completely trust ) in Jesus Christ - Ephesians 2:8-9
(For an illustration on what it means to trust God - Click Here)
When you turn away from your sins and trust in Jesus, there will be a supernatural change in your heart which the Bible calls being "Born Again." (John 3:3)