There is a program called Mind Mastery For Pitching and it is devoted strictly to the mental side of pitching. It contains a DVD titled Change Your Thinking, Change Your Life, and a 30 minute CD titled Becoming A Winning Pitcher.
The DVD explains how they use muscle testing to determine if the right or left hemisphere of the brain is switched on or switched off. When a hemisphere is switched off a pitcher may throw a wild pitch or walk a man with the bases loaded. The key to achieving peak performance as a pitcher is to keep both hemispheres of your brain switched on during your starts. The DVD shows you how to do it.
The CD is a pre-game mental preparation regime that will help you mentally prepare for your start. The Mind Mastery For Pitching program is available at amazom.com. Hope that helps.