What is necessary to change a person is to change his awareness of himself.

The line expresses a core humanistic-psychology premise associated with Maslow: enduring personal change is less a matter of external pressure or mere behavior modification than of shifts in self-perception. “Awareness of himself” points to insight—recognizing one’s needs, motives, defenses, and possibilities—so that choices become more authentic and less automatic. In this view, growth occurs when a person can accurately see who they are (and who they might become), which then reorganizes values and behavior from the inside out. The quote also implies that attempts to change someone without cultivating self-awareness tend to be superficial or unstable.