In a -VERY BLUNT WAY-, I would detail personal experience. The basic idea is to use the analogy of forgetting--even when you 'literally don't forget'. That means actually staring that experience in the face, then noticing how it hurts you, then noticing where these things come from, probably with researching ways on how you understand and move through them--thereby 'forgetting' them despite it being in memory.
Yeah, in a sense the best (and really only) way to "deal" with traumatic experiences is to confront them over and over again in scenarios that make you comfortable or happy (which may take multiple sittings, since the reviewing process often degrades your current emotional state somewhat). Each time you remember a memory your brain has to do a decode/encode process on the memory, and the encoding process takes a bit of input from the way you are currently thinking. Thus each time you review a traumatic memory while in a non-traumatic state of mind you slightly reduce the ability of said memory to traumatize you, because a bit of the traumatic emotions of the memory are overwritten with the calmer ones that you are feeling when you review it.
Even the forget/add details thing is doing the same process, though it's trading the actual memory itself away in exchange for a slightly faster emotional decay. (And honestly in most cases I think it's much better to remember a memory and be able to look at it later without whatever traumatic emotional impact it had than it is to totally forget it; without remembering something it's near impossible to learn about how to avoid it in the future, after all).
Though once again I'd like to reiterate that none of us are professionals, we are random people on the internet. Get professional help if you feel you need it, or if time is of the essence. Don't gamble important things on the sayings of random bystanders, get knowledge from those people who actually have it if you need it.
Edit: Typo fix