My friend Lance Arthur wrote a wonderful piece of advice which I keep taped up on the inside of my kitchen cupboards:
That debate about fat vs. carbs and what should one eat to lose weight is rearing its head again, and speaking as a person who has recently lost weight, I can tell you what the answer was for me: Eat Less. That's what I did. Oh, sure, I cut some things from my diet completely (donuts, potato chips, soft drinks) but mostly I just cut back on everything. I also stopped eating snacks at night, never ate dinner after 8pm, started eating something for breakfast (it jump-starts your metabolism) and began getting off my ass and exercising. But there's no magic cure. You can adopt a new diet and lose weight, but unless you stick to it (you really never want to eat pasta again? no lasagna? no spaghetti? ever again?) you're bound to gain it back. And you can come up with all sorts of excuses for not losing weight, but I'd probably label you lazy. Get off your ass and go outside and put down that fried chicken leg and drink more water and stop going to anything with a drive-thru and eat less. Eat Less.
(reprinted with permission)