It amazes me how short-term my memory is. A few months of living in a certain way, and I almost forget that it was ever different. The gap seems enormous between who I am now and who I was six months ago, and six months before that. In a way, that can be convenient, but on the other hand it's pretty unsettling to have a circumstantial identity. Can't I just pick the best one and be that person all the time?