I've seen a few posts about trying to deal with family. I almost didn't start a diet because I was afraid of my family's comments and questions - the possible fuss over meals when I couldn't eat what everyone else was eating, the possible guilt trips. My fears grew out of watching my mother battle weight her whole life and having my dad say things like, "I don't know why you even try, you won't succeed, you never do."
My husband isn't like that at all - if anything, he tries too hard to help, which can also become a barrier to success. So here's what I did:
--When I started my weight loss plan, I sat down with my family, outlined what I was doing and what I needed from them and made it clear that if they weren't sure about what I could eat, to ask me, and to not worry about what they were eating that I couldn't (my kids are slim, growing teens and my husband has never had a weight problem).
--I also let them know that I would be bringing food into the house that is intended just for me - to help me succeed in what I am doing. Sometimes, my husband barks at the kids for getting into things that he thinks are just for me (like bags of pistachios), but I patiently correct him: the kids can share these with me, they just need to be sensible and make sure I don't run out or let me know that the supplies are low.
--I was firm about no finger wagging when I went off plan - the only person I hurt if I eat what I shouldn't is me. It's not life threatening, so leave me in peace. It's too easy for people to jump on things like dark chocolate that might be part of the plan, but don't really seem like something that could be on any diet for losing weight.
This has really helped my family be supportive without unintentionally sabatoging what I am doing. So far, things are going well for me.