My brother actually got my family to become vegetarian. My mom had quit red meat for about 10 years before, but on Thanksgiving, when my brother was like, 4, Big Bird did a tour of the turkey farm. He asked mom before dinner was served how turkey came from the farm to the table and mom said they had to kill it. He refused to eat meat that night, and we ate a lot of Kraft Mac&Cheese till mom found some vegetarian recipies. Its not that hard to cut meat from your diet at all. We did it overnight, you just need to do it and throw out all your meat products. Finding some good vegetarian recipies helps too. Don't eat anything with eggplant in it in your early vegetarian days. It might actually put you off vegetarianism.
Adrian