I don't suggest burning bridges. Being done and burning bridges are very different things. Very.
Also, I assure you that being done and being off the roller coaster are not the same thing as you have stated it
That's why I'm suggesting that you deal with things in bite-size chunks. You'll need to deal with them at some point, so I'm suggesting spending a few seconds/minutes/hours a day and work on some of it until resolved for YOU.
If you want to stop hurting 6 months/days/years from now, you'll need to start working on it, vs "compartmentalizing" it and NOT getting back to dealing with it. You have the recipe for insanity and depression in my opinion.
The elephant in the room is that you're not done. As the old saying goes, elephants are best eaten in small pieces
AJ P.S. You're not insane yet. But you are hurting and coping as best you can with the tools you have available to you. I'm suggesting you create new tools to cope. And you are certainly not alone. We're right here with you.
"Our lives begin to end the day we become silent about things that matter" MLK Put the glass down... "Yesterday I was clever so I wanted to change the world Today I am wise, so I am changing myself."