Clawed back to $350 short of even this afternoon, thanks to a megadonk at two deep 5/10 tables. I kept thinking about how nice it would be to finish the day in the green after the horrible morning I had, but since reading Tommy Angelo's book I've been trying to improve my quitting decisions. My current quitting strategy is to start evaluating the quality of my game and tables ~90 minutes into the session. If my tables are average and I'm up or down a large amount, I quit. Idea being that if I'm up a lot I want to book a big win and if I'm down a lot there's almost no chance I'll get unstuck before I get tired and stop playing my best. If my tables are above average then I'll keep playing until I notice myself spewing or losing focus. Every 10 minutes or so my table and game standards increase so that for me to be playing over 2 hours my tables and game have to be damn good. That rarely happens. So this afternoon it was about an hour and forty minutes into my session and the megadonk busted on both 5/10 tables. I looked around, my other 3 tables were ok, not great, so I quit.

If you haven't read Tommy Angelo's Elements of Poker I recommend it. I guess I'd call it a poker psychology book, but there's a little bit of strategy, a little bit of etiquette, a little bit of everything thrown in. Here's a review thread I started a while ago:

http://www.flopturnriver.com/phpBB2/...lo-t69566.html