The good news is that you can be totally free of the past---at any moment. It’s entirely up to you. No one else can do ‘it’ for you. Yes, there can indeed be that ‘total revolution’ (or psychological mutation or transformation) of which J.Krishnamurti constantly spoke.
Now, I am not talking here about change as a result of intellectual analysis or any form of traditional psychology including psychoanalysis. You---yes, you---can instantaneously liberate yourself from the past and from past conditioning (including beliefs and misbeliefs of all kinds), provided you refuse to analyse or dissect the content of your consciousness and choose to see things as they really are, without judgment or evaluation of any kind.
So, stop looking back. Remember what happened to Lot’s wife? She looked back, and was turned into a pillar of salt---with no life in her. Don’t let that happen to you.