The best would be for you to consult a psychiatrist, he/she will know what's best for you.

It's hard to admit that you have a psychiatric disorder, and your friends/family may brand you as "psychotic".. It's just something our society has not come to accept.

Whenever you feel doubtful if you really need help or not. Just flash back to the times you had an attack, and think about the people around you. Since you are only 20, I assume you are not working yet. Imagine in future you had an attack at work, what would your colleagues and boss perceive you as?

If you feel you need help, start early and start young.