MM on how well you're doing and on your great response to your boss' gift!
One of the things that's helped me a lot is to head things like that off at the pass by telling people about my eating habits up front as much as I can. Sometimes it's hard, but they usually get it. With your boss, you might want to say (especially if they ask later if you liked the gift), "I really appreciate the gift, but I'm unable to eat things with sugar, so I gave it to my husband and son to enjoy. They thank you!" Hopefully he'll remember for the future.
As for food gifts, I just give things away immediately so I don't get a chance to be tempted. If I get a gift at work, I'll give it to someone at another desk and ask them to either take it for themselves or put it out on their desk for others to enjoy. Or giving it to DH is always an option.
This past Christmas, a student I've worked with asked me if I eat cookies after she found out about my diet. I explained that I love them but can't have them on my plan because of the sugar. She then told me that she was making cookies to give to people for the holiday but she'd find something different for me. I explained that she didn't have to give me anything, but a week later, she showed up with a mixed CD of Christmas songs she'd made for me. I loved it and told her so. It was such a nice gift and calorie-free!
