Abraham Maslow

Human life will never be understood unless its highest aspirations are taken into account. Growth, self-actualization, the striving toward health, the quest for identity and autonomy, the yearning for excellence (and other ways of phrasing the striving "upward") must by now be accepted beyond question as a widespread and perhaps universal human tendency

And yet there are also other regressive, fearful, self-diminishing tendencies as well, and it is very easy to forget them in our intoxication with "personal growth," especially for inexperienced youngsters. .... We must appreciate that many people choose the worse rather than the better, that growth is often a painful process....

Abraham Maslow, Motivation and Personality