How can I feel better about a procedure I'm getting after Christmas? I'm trying to be brave, but I'm scared now.

Sorry for your problem. One thing to try, short term, is to keep busy doing things that require concentration, to keep your mind off the procedure. The other thing is to fight the problem by bringing in the opposite -- like fighting dark with a candle. By telling yourself how brave and strong you are; by remembering times when you showed bravery. This seems best for long-term use.

Being scared is a natural action to these kinds of things. Fight through that fear so that it can't ever f**k with you ever again.