I saw this posted by Scott McBride on facebook, and thought it was a pretty good blog post on how important your stance is.  I myself have tried several different stances before settling with one.  My stance is also something that I can get lazy being consistent with, and so when I have a bad day of darts one of the first things I try to correct or stabilize is my stance.

Check out Scott’s article here: http://improveatdarts.com/darts-stance/