First thing I would do is move down in stakes.
1. I have no idea, I haven't read them. But fundamentals never change so if those aren't solid, get them there.
2. Lots of debate on this. You'll have to do some research and decide for yourself.
3. Go into lockdown mode (only play top of ranges, nutted hands) or leave. I don't tilt often and when I do I can get it under control before things go too haywire. Read Jared Tendler's book on this if it is problem for you. We have a forum dedicated to it here.
Psychology Forum