Abraham Maslow
Abraham Maslow proposes a hierarchy of needs, which he represents in a pyramid-shaped graphic. His theory is different from Glasser's in that he says that the needs have to be met in a particular order. Needs at the top of the pyramid can only be met, says Maslow, if the needs at the bottom of the pyramid are met first (Maslow, 1943).
Self-Actualization: The need to live to one's full and unique potential.
Esteem: The need for self-esteem and to feel competent; to feel recognized and respected by others.
Belonging: The need to be loved and to love; to be accepted and to feel that one belongs.
Safety: The need to feel secure and safe: to believe the world is organized and predictable.
Physiological: The need to satisfy basic physiological needs such as hunger, thirst, sleep, etc.