I'm also the only one doing Atkins in my family, but I don't find it a problem. There is usually one dish at dinner that everyone else eats that I avoid (tonight it was baked potato). Sometimes I'll substitute something for whatever everyone else is eating -- like spaghetti squash for spaghetti. Dinner is the only meal we usually eat together, everyone is on their own for breakfast and lunch, so it isn't really a problem for me to be the only one low carbing. I've gotten used to the others eating chocolate and dessert in front of me; it doesn't bother me at all and I'm not tempted by it.