"As a student, coach and instructor in the game of golf I have dedicated endless hours in research of the best approach to conquering the mental side of golf. David MacKenzie has developed the ultimate mental game training system for golf. David has put together a program that not only explains “what to do” but clearly defines “how to do it”. Providing an effective and easy to implement system is where many mental game coaches fall short and David’s program is absolutely spot on!" - Steve Patterson, Colorado Teacher of the Year 2016
"Of all the mental training packages available, Golf State of Mind is at the highest level. The content is superbly written based on good science, and knowledge David has gained from the many high-level players with whom he works. More importantly, the drills and exercises for their application are clear. Dial-in! This stuff really works." - Dr. Glen Albaugh, Author of "Winning The Battle Within"