Weird emotions with weight loss-

Okay, so I've been feeling kind of crummy lately. I am within 10 lbs of my goal weight and have been losing and gaining the same pound repeatedly for the last three weeks. I was feeling down and crabby.

My husband came across a picture of me from January. He showed me the pic, thinking it would get me out of my funk. I weighed 52 lbs. more in January than I do right now. The picture was shocking to me, I cried and had all kinds of weird emotions. I started thinking about how many things have changed since January and I started processing the fact that I am a completely different person.

I am more assertive. I am much more likely to voice my opinions and to take care of myself. Not only with regard to my health, but in all aspects of my life, from work to parenting. I am picky. About everything from food to who I spend time with. I turned down a margarita the other day. This girl would NEVER have turned down a margarita! I had a long ride planned for the next morning and I knew I wouldn't feel as good on the bike if I had the margarita. I have quit spending time with some of my friends. They annoy me. They never did before. But, now they annoy me because they complain.

Anyway, I started feeling very strange, like I don't really know myself. I still feel like I am overweight, even though I'm very close to a healthy BMI. I feel weird in clothes, and I feel weird with myself. I am happy, I am much more healthy, but I just feel very strange.

Has anyone else experienced this, and how did you deal with it? Will my brain eventually catch up with the rest of me?