letting go

I'm trying real hard at letting go but it is hard. I have a happier exterior and even a happier interior but the guilt and insecurity are still there. They creep in when you least expect it - like a switch went off in you head. It's hard sometimes to turn off that inner dialogue but I am trying to stay busy and turn that switch off. I am better at some moments that others. A lot of people at work have been noticing my weight loss and I'm almost embarrassed to tell them why. Some are genuinely concerned others are just plain nosy. I explain it is my new meds and they are all like 'I need to get on that' - don't they know that this is not the way to lose weight? 2 break downs in one season is not funny! I am scared to death.