Well if you're in the classroom right now, you've done the first big step. The rest is gravy. Keep in mind the person you want to be and keep reminding yourself that you are in that classroom to better yourself. You're in that classroom to become the person you want to be. Remember to give yourself a few mental pats on the back for each hour, minute, second you make it.
Just put one foot in front of the other...keep on going and before long, the day will be done and you will have completed a day in class. That is so cool! Smile dude...you're doing great!