The importance of a mantra

I took some classes today to improve my singing/performing capabilities and one of the classes featured a speaker that talked about how if you have a positive attitude and you feel happy it helps you sing/perform better.  I realize that that's not a new concept but I liked how she talked about how it can be really helpful to have a mantra so that if you're ever nervous you can say the mantra to yourself. I decided mine would be "Everything will be all right in the end and if it's not all right it's not yet the end." That'll be my motivation enough to keep on singing until everything is all right!