I actually like the idea of a Tattoo and did something very similar as a reminder to myself to observe not absorb. You sound switched on and I think getting some healthy distance and starting your own life will do wonders. I moved to another country and life has been great now not being absorbed by others. I also found once I truly understood the disorders of these people by lots of research I was able to put in really good boundaries and now feel free and stopped needing to self medicate also with drinking. Good luck to you I have a feeling you are going to do great.