Dont eat late, some people say 5pm, but we are all up late anyways so I would say the cut off is more like 9PM if you stay till 2AM or so.
Dont drink soda, drink sometihng like Green Tea, it has way less sugar, carbs, is healthier, and believe it or not, soda packs on the pounds.
These are two small diet changes that will make a huge difference. You will find yourself waking up hungry in the morning which is good, have a good hearty breakfast and make sure to get your meals in earlier.
Now add some weight lifting and cardio and you should be all set.
Oh, btw, stress also helps you to lose weight, although I wouldn't necessarily recommend it. But hey, it worked for me so I mention it.
