Okay, so, I've been reading Henry Miller a lot lately, and I'm predisposed, consequently, not to go with the "I am" option. ("...I thought that I was an artist. I no longer think about it, I am." -Tropic of Cancer) That could totally never be me. Too bold. And it implies living, or something. I always feel like I'm doing too much observing, rather.
So, "Am I?" And I suppose it fits, as well, because I am always trying to be the best possible version of myself. I never feel like I'm achieving it, though. It's like I get stuck on this 97% mark, and every time I feel I have improved myself, there is more to achieve yet.