Isaac is a bright student but he procrastinates. he puts off writing term papers and gets incomplete grades which eventually become f's. isaac's therapist assumes that isaac's procrastination masks his low self-regard, and that he is out of touch with his real feelings.

I believe the answer is: Humanist

Humanist therapists would focused all of their approach to handle their patients in the person's individual nature.
They tend to not rely on the standard definition that written in psychology books and aimed to make the patients see their true value as a human being in order to fix their psychological problems.