I lost about 60 lbs. (sorry I'm metricly challenged) over the course of a year and a half. My basic plan was simple - only eat when you're hungry. It sounds obvious, but I found that I was eating for lots of other reasons, like:
- It's free and it's sitting in the breakroom at work.
- I don't want to offend Grandma but not having a second helping.
- I had a rough day, I need a bunch of cookies.
- I'm bored.
- This lasanga/burger/pizza is so good that I want more.
- If I don't eat these leftovers soon, they'll go bad and I'll have to throw them away.
Excersize, and as many have pointed out, leading an active life, are important, but for me the big thing was getting the food intake under control.