Within every run, there are successes and defeats. As an advanced runner, you learn that you can make a conscious decision to focus on either the negative or the positive. Sure, you can always find defeats: not going as fast as you had hoped, not feeling light on your feet, not having time to run as far as you expected. But you can always find successes just as easily. Some days, it's going farther or pushing harder than ever before. Some days, the success is just getting out the door. Some days - on the really rough days - a success can be as simple as staying in good spirits and reminding yourself that tomorrow is a fresh opportunity to feel better. It's a lesson that, once learned on the run, proves invaluable when applied to other aspects of life.