Philippians 3:13-14 (NIV)
“Brothers and sisters, I do not consider myself yet to have taken hold of it. But one thing I do: Forgetting what is behind and straining toward what is ahead, I press on toward the goal to win the prize for which God has called me heavenward in Christ Jesus.”
It is very important that we as Christians remember always, that we love a God who is a God of first, second, third, forth, and one hundred or more chances, if we need his forgiveness. It is important that we forgive ourselves quickly, and not dwell in our past mistakes.