You don't completely get over anything, but I have a strategy that has at least mitigated some of the long term damage from past events in my life. This will s

You don't completely get over anything, but I have a strategy that has at least mitigated some of the long term damage from past events in my life. This will seem bizarre, but bear with me. If I can, when an upsetting memory pops up, I try to find a reason to laugh at it, or force myself to dismissively laugh at it, and then I file that memory back into my brain and move on. The long-term effect of this is that to some extent I can detach myself from the emotions I had in the moment and just be able to recall these events more objectively. Because I force myself to laugh at events long since passed, the more I do it, the less I associate the memory with the original emotion. Eventually I don't need the strategy and can think about an incident rationally without spiraling out of control emotionally. Of course this may not be possible for some memories, and I don't necessarily recommend it. If a troubling memory involves being bullied, it can help, in my experience. Anything involving regret or guilt, not so much; in those cases it's better to make them right if you can and otherwise accept it.