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

If the essential core of the person is denied or suppressed, he gets sick sometimes in obvious ways, sometimes in subtle ways, sometimes immediately, sometimes later.

Descriptively, we can see in each person his own (weak) tendencies to grow toward self-actualization; and also descriptively, we can see his various (weak) tendencies toward regressing (out of fear, hostility, or laziness). [...] if a person could himself see all the likely consequences of growth and all the likely consequences of coasting or of regression, and if he were allowed to choose between them, he would always (in principle, and under 'good conditions') choose the consequences of growth and reject the consequences of regression. That is, the more one knows of the actual consequences of growth-choices and regression-choices, the more attractive become the growth-choices to practically any human being. And these are the actual choices he is prone to make if conditions are good, i.e., if he is allowed truly free choice so that his organism can express its own nature.

The concept of the well-adjusted personality or of good adjustment sets a low ceiling upon the possibility for advancement and for growth. The cow, the slave, the robot may all be well adjusted.