Are you surrounded by "personal drainers?" This article from ediets.com is actually a little depressing when it comes to considering how your friends can really hurt a good diet plan by undermining and sabotaging you at every turn, either intentionally or not. If you hang with like-minded health-conscious types you'll be more successful getting through your weak moments than if you spend time with friends that are just annoyed by your dieting efforts and will tempt you at every turn with pizza and beer.

I think the point is valid, but I'd also like to think I can find a way to lose weight without finding an entirely new group of friends first, even if my best friend isn't as into it as I am.