What worked for me was
don't eat or drink anything with a high sugar content
eat when you're hungry (keeps the metabolism going)
allow yourself one cheat meal a week, but no more than one.
drink plenty of water.
I lost about 20 pounds doing this over a few weeks, but I wasn't exactly overweight, just a bit chubby and now i'm what I want to be.
I also did this when my only exercise was walking about 1 or 2 miles a day in my general day to day business and still going out drinking about 3 nights a week.
