11/18/2011 03:20 pm ET | Updated Jan 18, 2012

The 8 People Who Will Ruin Your Attempt To Lose Weight

It's damn hard to lose weight and just generally get in shape. Americans are getting fatter every year, and 80 percent of people who lose weight gain it all back. Why does it seem so impossible?

Part of the reason is willpower and genetics, blah, blah, blah, but a big part of it is other people. Here are some of those often well-meaning monsters you must overcome in your battle to get healthy.