I was finishing up Benjamin Graham's Intelligent Investor last night when I came upon the following:

Quote Originally Posted by Benjamin Graham
"Have the courage of your knowledge and experience. If you have formed a conclusion from the facts and if you know your judgment is sound, act on it - even though others may hesitate or differ." (You are neither right nor wrong because the crowd disagrees with you. You are right because your data and reasoning are right.) Similarly, in the world of securities, courage becomes the supreme virtue after adequate knowledge and a tested judgment are at hand.
- p. 524, 2003 Edition.

Seems pretty applicable to big bet poker, no?