When Joel met his new teacher, he said, "I struggle with everything." When she asked, "What about at school? Is there a subject you like or you are good in?" Joel replied, "No, I'm always behind." Joel's overall self-assessment reflects his:

Self-esteem

Explanation:

In psychology, the term self-esteem consists of a person's sense of self-value or self-appreciation, so it determines how much he/she estimates himself/herself. Self-esteem is considered a trait of personality, and this implicates that it is permanent. One's ideas about self-appearance, convictions, feelings, and behaviors all influence self-esteem.