If something from your past is holding you back from doing what you need to do in the present to create a better future for yourself, then you need to figure it out. You REALLY need to figure it out. You can’t let things that have already happened prevent you from making the most out of the situation you are currently in. Being bitter about something is not going to help you; it’s just an extra barrier you are placing upon yourself and it’s going to take up bandwidth in your brain, in your soul, that you could be using for something else, using for anything else. Having resentment isn’t going to help anyone. It certainly isn’t going to help you. You have to get rid of it. You have to eliminate it from your system so that you can propel yourself forward in peace. Positive momentum can only be slowed by negative thoughts and actions, it can never be propelled by them. Being upset about something that has already happened is certainly not going to make your life better. Lose the negative past in order to build that positive future.