The following is the link for the mental conditioning material that Coach Hampt is using at Manchester Valley High School:
Some of the books Coach Hampt has mentioned, "1-Pitch Warrior" can be found at the following website:
http://www.1pitchwarrior.com/1-pitch-warrior-shopping/.
There is is discount code to use 1PWGSP to get access to the books, 1PW System, and Lessons in Leadership for $20 off.