The author and coach Hank Fieger has written a very practical and personal handbook introducing 4 core principles for behaviour change at the individual level.
According to him awareness is the first step, followed by understanding the factors causing retention of one’s habitual behaviour. Thirdly, one has to replace old and ineffective patterns by making new choices that lead to first improvements. Finally, these improvements will only be reinforced by their practice including feedback by others.
Fieger’s guide is recommended to business executives, coaches and policy makers as well as to everyday individuals interested in modifying their way of life, improving their efficiency and creativity and developing as a human being. Additionally one will find specific exercises at the end of each chapter to rehearse the four principles for the purpose of inducing sustained life change.

Fieger, H. (2009). Behavior change: A view from the inside out. New York: Morgan James Publishing