Really a great post.

Just search abit on wiki, there are some really interesting psychological theories that seem to apply to poker as well.

For example:

Observer-expectancy effect
The observer-expectancy effect, in science, is a cognitive bias that occurs when a researcher expects a given result and therefore unconsciously manipulates an experiment or misinterprets data in order to find it.
This is a huge problem in poker, because there is so much luck involved and such a big sample size needed, that you can basically talk yourself into believing whatever you want.

Hawthrone effect
The Hawthorne effect is a phenomenon in industrial psychology first observed in the 1920s that refers to improvements in productivity or quality resulting from the mere fact that workers knew they were being studied or observed.
At some point, I tried something:
Every hand I was involved, in my mind I would explain every action I took like I would if I was writing a post here on the board about the hand. This really helped me, because when I was about to do something stupid I would see the responses here on the board, and not do it ^^

Self-fulfilling prophecy
A self-fulfilling prophecy is a prediction that, in being made, actually causes itself to become true.
There are different definitions for it, but it also means that if you believe in something (REALLY believe in it) then unconsciously you influence your surroundings in a way that actually makes your believe come true.
This is usually not the really obious stuff, like you believing you are a good tennis player and joining a tennis club