Since Feb. 1 I've lost 18 lbs essentially using this app I downloaded for my phone:
http://www.myfitnesspal.com/
Counting calories can be a pain in the arse, but this app makes it really easy - it has a massive database of foods and even has a bar code scanner to record the nutritional information of what you're eating. If you don't have much time to exercise, this makes it really easy to know how much you're taking in on any given day.
May not be the solution for everyone but it's worked for me.