[velvetdog]

Smoking pot might keep you off tilt, but would likely not improve your poker playing.

Seriously, there is great advice in this thread about taking the long view, understanding/appreciating variance etc. Sklansky says to look at poker as one long game; individual sessions or hands do not matter. What matters is making decisions with the highest expectation. Place value on making good decisions not results. The results will take care of themsleves. This is much easier said than done and I struggle with it also (being Italian/German/Irish).