Good book. If I wrote a chapter for it, it might go something like this...
I believe that the key to long term commitment is having lofty goals and no expectations. People will shake their heads at the notion of "no expectations" and confuse it with "low expectations" - this is not what I'm saying. What I am saying is that expectations, good or bad, are bad, and the inability to untangle expectations from goals in training, often leads to disappointment, overtraining, and injury.
Goals are absolutely necessary for most people to reach their fullest potential. Goals help us plan. Goals keep us disciplined. Goals keep us focused, and goals keep us on the path. Goals keep us from adding the superfluous or injurious "extra". Goals keep us open to options. Goals are all the "why" you need.
Expectations make us greedy. Expectations leave us disappointed. Expectations get us into trouble. Expectations tempt us to leave the path. Expectations get us into trouble. Expectations lead to entitlement. Expectations give us tunnel vision and make us "bend the map". Expectations make us add weight when we shouldn't. Expectations say to us "why not this too?".
Goals, plans, discipline, and routine are all positives when it comes to training on the path to mastery. However, when clouded by expectation, those goals become cruel masters that spur you onward (and downward) and fit you with blinders called "perserverance" that could more aptly be called, at best, rigidity, and, at its worst, addiction or resignation.