I spent twelve years training for a career that was over in a week. Joe Namath spent one week training for a career that lasted twelve years.
You have to train your mind like you train your body.
I learned that the only way you are going to get anywhere in life is to work hard at it. Whether you're a musician, a writer, an athlete or a businessman, there is no getting around it. If you do, you'll win - if you don't, you won't.