If you deliberately plan to be less than you are capable of being, then I warn you that you’ll be deeply unhappy for the rest of your life. You will … - Abraham Maslow

If you plan on being anything less than you are capable of being, you will probably be unhappy all the days of your life.

To sum it up, from this point of view, the two religions of mankind tend to be the peakers and the non-peakers, that is to say, those who have private, personal, transcendent, core-religious experiences easily and often and who accept them and make use of them, and, on the other hand, those who have never had them or who repress or suppress them and who, therefore, cannot make use of them for their personal therapy, personal growth, or personal fulfillment.

Thwarting of unimportant desires produces no psychopathological results; thwarting of a basically important need does produce such results. Any theory of psychopathogenesis must then be based on a sound theory of motivation. A conflict or a frustration is not necessarily pathogenic. It becomes so only when it threatens or thwarts the basic needs, or partial needs that are closely related to the basic needs (10).

Human nature is not nearly as bad as it has been thought to be... In fact it can be said that the possibilities of human nature have customarily been sold short.