Which is better associate's degree in medical assisting or associate's degree in psycology?

It's not that one is better than the other, it's just that they are different. The question is which one is best for you, if either. You need to acquire a vision; a clearly articulated picture of the future you intend to create for yourself. This vision should be based on a passion for what you want to do, and the benefit it brings others as well as yourself. The vision must be very specific. Once you acquire that vision, your path will become clear.