Chemikal Imbalance
I've been a vegetarian for about a month now and at first my friends ridiculed me for it thinking I only wanted attention. My dad also wasn't too happy with the decision and my grandma is constantly telling me that I'm going to starve and die without meat. It is hard when the people close to you don't exactly agree with your decisions, but I can see why people would quite after a week because I came close to giving it all up because of how hard everyone was being on me about it. They're now slowly growing acustomed to it, and things are slowly getting easier. ^_^ I remember when I decided to be a Vegetarian I lasted about 3 days before caving in to pressure/desire, but now I've lasted a year and a half. My friends used to always tease me but they eventually began too feel bad about themselves eating meat.
People thought it would be really hard so don't bother trying but I found that it only gets easier the more you get used to it.