You have to train your mind like you train your body
Bruce Jenner, Athletics
Sometimes it's the obvious that we forget - what are you going to do today to train your mind? A good place to start is to actually know what's going on in your head - if you normally take little notice of what you are thinking when you are training take some time today to listen to those voices in your head (we all have them). Are they helping you or hindering you?