Undifferentiated is the term that describes David's dilemma.
Explanation:
Holland’s Theory states that undifferentiated people face difficulty in making career choices and look for career counseling. They have interest and abilities in distinct areas, like in this case David enjoy doing almost everything, but when it came to making a career choice, he just cannot decide. A person who shows different types of personality types is termed as poorly defined or undifferentiated. People are categorized under six model personality types:
Realistic
Investigative
Artistic
Social
Enterprising
Conventional