For me years ago, cutting sodas out dropped a seemingly instant 10 lbs off. Instead of soda I'd get water, club soda, or sparkling water.

Also, alcohol (beer or liquor) was a triple threat for me. It lowered my metabolism, provided empty calories, and increased my appetite for crap food late at night (while my metabolism was low).

Now I'm working on reducing my sugar intake. My sweet tooth is a real problem, so I've got my work cut out. I'm also working on weaning myself off of coffee. I suspect that it's somehow upsetting my body's natural balance. I enjoy the adrenalin rush of coffee, but too much over the course of weeks has the opposite effect and the lows are really low. Everything in moderation, eh?

I'd suggest also getting into the gym. For fastest results, I suggest a book called "Starting Strength" and following the novice program. I went from deep squatting 160 to 345lbs (3 sets x 5 reps) in 16 weeks while using no supplements except MILK. Seriously. My female teammate at 120lbs went from deep squatting just the bar (45lbs) to squatting 170lbs (3 sets x 5 reps) while on the same program.