The desire to realize and achieve one's true potential is the self actualization need from Maslow's hierarchy of needs.
Maslow formed a theory that everyone has 5 basic needs in life and these needs motivate behavior to achieve those needs. He starts with the most basic physiological needs (food, water, shelter) to the higher order or self actualization. Self actualization deals with being motivated by doing things you love and things that fit your true self. That is why realizing and achieving your true potential fits here.
Answer:
I'm going with "psychological"
Explanation:
Because it has to do with the mental and/or emotional state of a person.
