Tell me how a person judges his or her self-esteem, and I will tell you how that person operates at work, in love, in sex, in parenting, in every important aspect of existence - and how high he or she is likely to rise. The reputation you have with yourself - your self-esteem - is the single most important factor for a fulfilling life.
Not a great deal is known about the factors in childhood that doubtless underlie a person's choice of career - I'm talking now about a career to which one is passionately committed, in contradistinction to a career chosen merely as a means of earning a living.
I cannot remember a time when the question of why people behave as they do was not intensely interesting to me. The desire to understand was very important. When I was young, I was aware of the fact that much of the time, the reasons a person gave for his actions were not the actual reasons.