i am of the mind that there is no forgiveness. the punishment fits the crime. that is cause-and-effect.
however, one may right their life, by making better causes.
forget the past, live in the present, and build your future.
when you make good causes, you will have good results. if you make bad causes, you will have bad results.
it is your own life life, you own it, do what you want, but the smart money is on being good.