I stop thinking about it.

Sounds easy. but I found a great article in a sports psychology site that recommends the TRAIN and TRUST model.

Think and dissect and even worry during training time but get yourself in the habit of turning all that **** off when you play.

When I catch myself starting to think I yell, "STOP!" (sometimes confusing to other players), say "Let go" and deeply exhale, and then say "Focus."

Simple ****, but I find it really turns me into a very focused, stone-faced goalie. It helps a lot to get those extra baggage emotions and feelings out of the way.

The key is trust.

Hope that helps.