[hummusx]

This is going to sounds weird maybe, but have you thought about multi-tabling? I'm developing a theory that my play has gotten better as I've added more tables - I don't have time to talk myself into dumb moves. Most of the time I only have time to glance at the table, make a snap decision, and move on. It hasn't completely eliminated dumb moves, and obviously in some instance I probably make worse decisions under pressure, but overall I feel better about not doing dumb stuff. Maybe different people are different, but it might be worth a go. I find boredom (ie singe tabling) leads me to do stupid stuff.