Don has severe cyclical mood swings. For days, he can be very talkative, purchase items with his credit card even though he doesn’t have the money to pay for them, and stay awake for long periods without seeming to need sleep. Eventually his mood shifts, and he becomes very depressed. Based on this information, Don is probably suffering from .

Bi-Polar Disorder

Explanation:

According to the presented conditions, it is possible that Don is suffering from Bi-Polar Disorder. This is because of his dual personality characteristics exhibition in Don’s daily routines. The details also show that he has some kind of illegal income source that is affecting him in some way. He is depressed because he is in some kind of trouble. That’s the reason he is showing various polarities of his personality

out of the choices i'd say d the ability to set goals, mainly because to desire to continue you need motivation but it isn't motivation in that part, but setting goals means you have an endgame and you want to reach it which sums up motivation.