who am I?

So I look at my life, as it stands right now, and I find myself wondering who I am. I am the mother of a two children, one of which in on his own journey through a form of mental illness. I am a daughter who cares for her mothers daily needs, including cleaning the house, the yard, the kids and everything that's included there in. I buy the food, clean the house, feed the family, maintain the household, and work full time while going to grad school. I am an almost graduated Masters student who has managed to keep a B average this far. I am single mom, who is rasing two boys without any help from their dad. He chooses not to be involved since he had a new family with his current girlfriend. If it didn't bother Patrick so much, it wouldn't bother me, but Patrick wants a dad, and right now, as far as he is concerned he doesn't have one. I am single right now by choice, as I don't have time to get involved right now with anyone else. I simply have no desire to give anything to anyone else. There is nothing else to give. I have friends, and I hope I'm as good a friend to them as they have been to me. I try to be anyway. I am 36, and sometimes it feels like time is the enemy, the older it gets the faster it slips by me, every day falling away a little faster than the one before it. Somedays, I feel like I'm still 22, and not entirely sure how I ended up where I am. I look around me, and wonder How did this happen? How did I get here? I am a mom, who loves her kids more than anything else in the entire world. They are the best thing I have ever done, and I know how lucky I am to have them, healthy and whole. Patrick especially, he has his issues, but we're working on them. Therapy is working its magic, and hes in special ed in school, something I've been working for since September. So, with all of this, I still look around and wonder who is the person who lives just under the surface of all of this? That reamins to be seen.