God wants to set you free from the hurts of the past. Paul states in Philippians that forgetting the past is a prerequisite for reaching the great things in the future. This is one reason clinging to the past is so damaging. Failure in this area is probably responsible for more life failures than any other single factor.

Brethren, I do not count myself to have apprehended; but one thing I do, forgetting those things which are behind and reaching forward to those things which are ahead.
(Philippians 3:13 NKJV)