I don't know who I am anymore

I don't look the same, or act the same, or socialize the same, or even sound like the same person. Am I still there and will I ever come back. Sometimes at night, I get the motivation to get out and go somewhere, or exercise, take a shower, shave, do my nails, fix my hair, put on some makeup, and then I'll tell myself that I swear I'll keep that motivation until the next day, so that I am able to do these things, but of course, by the next morning, I'm beat from fighting sleep all night.
My pdoc has said that I will never be the same and I realize that by talking to all of you, that it never goes away.
I don't want to be me, if this is who I am.
I don't want everything in life to be the way it was before. I think I was doing things that I wasn't meant to do and I know I was trying to hard to be supermom that controlled the world. I would want those things to be different, but just a taste of my life would be so nice. This is not the way it is supposed to be. I just want to throw it away, throw the pills away, and "snap out of it" as everyone else would say.
I am nobody in this world...most people don't even realize that I exist anymore (with the exception of my husband, kids, and mother). Even they don't like me. I know they love me, but they don't like me. How could anyone like the behavior that I have. It's no different than the way I feel about my daughter. I love her so much and would DIE for her, but I don't like her. She's turned out to be so selfish and mean and lazy. Maybe she will grow out of that as her teenage years pass, but I don't think I'm going to be growing out of my behavior. The way I act will forever be etched in the brains of my children and they will tell theirs. I can only hope that they remember when things were good.