Buy and read the book FLOW, The Psychology of Optimal Experience, by Mihaly Csikszentmihalyi.. Yes that’s actually his last name! It is simply one of the finest books ever written on acquiring and prolonging a heightened state of focus, concentration and learning.
Much of the book is for athletes and gives examples of athletic performance related applications of the techniques. 1990, Harper and Row Publishers Inc. 10 E. 53rd St., NY , NY 10022. First Harper Perennial edition published in 1991. Available at most major books stores and the Amazon link above :-).
Here’s an overview of the key steps to creating this extraordinary state of enjoyment and concentration.
Mental Game To The Max (soon)