Do You Know the Markers of being Crazy?

They say that people who are insane preform the same actions over and over again only to get the same failure. If this is the marker of being crazy then this is me. I keep making the same mistakes over and over again, hoping that something will suddenly be different and I'll finally get the positive result. After a heart to heart with one of my friends last night, I think that I actually enjoy this sad, miserable, chopped liver feeling. Like being a cutter only instead of physical harm its mental/emotional. Or my insanity is coming from the near constant lack of sleep for the last 2 or so weeks.
I'm scared for this semester to end, to lose really everyone in my life here in Bloomington. I'm not going to have my midnight walks with my friends, I'm not going to be able to go sleep over and see my ex-lover, I'm going to be alone with my thoughts. My few friends that do live local have jobs and lives of their own and wont always have time for me. I don't wanna lose my life that I have now, I'm conformable in it.
I'm going to go be emo...and then really really drunk