How can I motivate myself to exercise?

First of all, don't use drugs. Second of all, it's not that being overweight is ugly, it's just unhealthy. Third of all, what I do to get myself motivated for anything is to compare myself to someone else. For example, I see my friends going through hard times, but they still make better grades than me, and it motivates me to do better. So, you can find someone who has your same disorder and see how they succeed at losing weight, and it'll probably motivate you to do better than that person. Everyone is different though, but I'm just telling you what works for me. :- )