If it is any consolation before you begin, this check-up is absolutely free. It will only cost you, of course, on diagnosis, your sin. Nobody in their right mind wants to keep a killer cancer. For the next hour or so, let the Holy Spirit turn His searchlight on your spiritual life. And let Him start by opening the closets of your memory.
Memory is highly efficient at remembering wrong.
Shock, drugs and other medical and psychiatric treatment may try to take guilt memories from the mind, but God's method is the only fully effective one - FACE each wrong with its full load of guilt, admit it to God and others who are involved, as wrong, then ask and receive healing forgiveness. Take each one slowly and carefully. Confess them to the Lord one by one as He shows them to you. When you have finished, RE -READ your list again, and add any others that come to mind. Don't give in to the temptation to pass quickly over any area that hurts.