You don't particularly run away from it per se, but I would suggest eliminating all forms of contact with any of them and realize you were a safe haven for looney boys. No shame in that, we all at one point or another were a rest stop for someone not meant to be around for long.
Realize that it is their loss and begin rebuilding. Learn something new and challenge yourself daily. Work out or travel more. Do things that excite you. I'd say that is a great place to start.