A person's is their sense of how capable they are to complete a task or accomplish a goal.

Self-efficacy.

Explanation:

The above term can be simply referred to as the set of beliefs we hold as a human about our ability to complete a particular task. In a lot of scenarios, it is linked to academic achievement and also the ability to beat phobias

Self-efficacy has important effects on the number of effort individuals apply to a given task. Someone with high levels of self-efficacy for a given task are resilient and protracted within the face of setbacks, while someone with low levels of self-efficacy for that task may disengage or avoid the case.