Self-control/discipline is just as important as raw skill in being a successful poker player. Look at Stuey Ungar. He was God's greatest gift to poker but he was always going broke (both at the table and away)because he couldn't control his urges.
Here are some articles that I think are relevant to your problem. The first article is Lederer talking about how meditation helps him at the tables, while the second is an essay about cognitive dissonance.

http://www.howardlederer.com/howard-...-article9.html
http://www.yetiarts.com/aaron/science/cogdiss.shtml