While I prefer to refer to the kinds of "ghosts" that you refer to here as "skeletons in the closet", I did still find your expose' to hit a chord.

It is clear to me that you are regretful of certain things that you did and perhaps others that you did not.

This is fine. It is actually a good thing to feel this way.

The next step is two-fold.

Plan your redemption and forgive yourself.

Even if somebody near and dear may no longer be around to physically pat you upon the back for doing so, doing something that they would have wanted - as a gesture loaded with meaning directed at them - will make a big difference. You'll do right by your actions and the gnawing feeling will ease - the scales tipping back in your favour.

Good luck.

This has my vote.