I would glance at the letter and toss it, honestly. It’s too long, repetitive, dull, and doesn’t tell me that you have changed. Take some time off, figure out what you really want to do, then reapply somewhere else. Do you really want to be in college or do you just think you should be in college? It’s perfectly okay to fail at something you do not really want, anyway. Get a job and figure out what you do want.