I wish you the best of luck!
Remember, don't deprive yourself TOO much when it comes to food. If you feel deprived, you will fail and crumble. Plus, it sucks to not be able to eat what you'd like.
What I like to do is eat healthy ALL weeklong (but remember, portion is KEY. Too much of ANYTHING is bad), but on Saturdays (today!) I allow myself to whatever the heck I want. I also eat a salad once a day too, even on Saturday.
At this rate, I'm losing slowly but steadily and have been for months.
And you can do it too! Don't give up!
OH, pictures help too. Put a pic of a musculer guy (or a fat guy, negative reinforcement!) on your fridge door to remind yourself of your goals.
Quoting TiberiusLazarus
This last week was complete fail. Completely stressed with school and just in a terrible mood all week. I had no desire to workout at all, yet I still felt bad for not doing it. Now I'm feeling better, much less stressed/depressed. Time to get this shit going again. Gonna hit the gym here in a little while. Do a little lifting just to get my muscles stressed again and then do some running.
Aww, I'm sorry.

but we all have our bad weeks, don't feel bad.
You know, exercise really helps with stress. I know that you're busy with stuff, esp classes, but if you worked out for even just 15-20 min BEFORE you study, you'll be feeling much better, less stressed, and can work more efficiently (you'll feel more focused). Then you'll have more time to do the things that you enjoy.