[Silverbleed]

+ Drink lots water (not when you're eating breakfast, lunch or dinner! Having a drink with dinner is the worst you can do, it actually stops the digestion for a while!)
+ Do pushups and other things you wanna work on every day, even tho it's only 2 pushups xD After a week you might be stronger to do 3 or 4.
+ DVD's like Zumba are fun and good for your body. You can see and feel the result pretty quick, and that might keep you motivated =)
+ Eat more fruit and vegetables, and avoid as much sugar as you can.

If you put this in your 'lifestyle' and keep on to it, you'll be fine =) Don't stop when it's going well, but keep it up. Because if you stop, you'll gain your tummy back again.