Are these people who mix you up merely acquaintances? Most people are self-absorbed and don't pay much attention to others unless they are actually friends, or co-workers they see every day, or family.

I live in an apartment building. The door staff and a few people I know well don't mix me up, but I believe one or two of the other neighbors think I'm someone else, because 40lbs ago I did slightly resemble another woman who is about my age and coloring but even then she was heavier. One neighbor kept asking me how my dog is. I don't have one, but the other woman does. One day I kind of lost patience and I said "Look, you ask me that every time you see me but you never bother to listen to the answer. I don't have a dog." She was so shocked. It would be unfortunate if she tells everyone it was the other woman who was rude to her!

The great thing is you've lost 100lbs! That's amazing. Shrug off the self-absorbed ones and focus your energy on people who really see and like you.