One very good rule of thumb for successful living is... put your troubles behind you and move forward.

Move forward.

You cannot change the past, you can rearrange your future. As the bible says, forgive.

But do not forget all things, especially your own errors lest you make them again.

Seek Jesus, and his plan for your life. God has a purpose for all of us, it's up to us to step up to the plate with him, and walk the direction he wants us to walk to fulfill that purpose.