Humanistic and Existential Personality Theories offered perspectives that have proved to be valuable to those researching and exploring how one’s personality develops and expands throughout life.

Whenever giving praise or saying thanks can make a person believe he or she is wanted and know there is a reason to live. The humanistic theories focus on the individual and no one else.
The humanistic theory is the psychological perception of good in every human. This theory follows steps for the individual to achieve self-actualization. For one to achieve this, he or she must fulfill his or her needs of the lower level.
A strong believer of free will, the humanistic perspective has always argued that despite environmental and biological factors, people have the ability to act and change in ways that they themselves govern.

Roger's also believed it was important for people to love themselves and accept themselves, because these were steps to solving problems.
Existentialism is more of individual rather than social. They, Existentialist need to justify their existence. For them, they’re having their journey in life to know their purpose based on their own philosophy, according to EDU310 Foundations of Learning.

A post second world war movement, mainly centered around artistic and creative intellectuals. A difficult concept to define if indeed concept is the correct term. Existentialism seems to come from the human nature and how individuals deal with there own existence, indeed one of the most famous questions which perhaps describes the movement is “if a tree falls but no one is there does it make a sound?” converting this to man kinds philosophy “if we do not have a marked existence then do we exist?” as a human being we have to create values by living life which intern creates cause and effect.
Existentialism is a philosophical movement that views human