I've heard it said that resentments are like me taking poison and waiting for the other person to die.
it is a difficult situation for you, I think, because even if you let go, you are still living it on a daily basis.
However, I believe, you can start by getting rid of those deep resentments toward yourself, they turn to self pity which in turn leads us to the bottle.
Please get off self loathing and self hate first, you are already dealing with your problems by posting here, having a sponsor and in recovery.