Why do all good things come to an end?

I leave London tomorrow afternoon. I am in shock over how fast this semester has gone by. I'm sad to leave this amazing city, and to have to say goodbye to someone that has been by my side through it all. I have had an unbelievable experience, one so great it's almost hard to put it into words. I feel as though I have done a lot of growing up here, and have learned a lot about life. I have had the opportunity to be completely on own. I have laughed a lot, seen so much more of the world, and have finally found myself. I am such a better person because of this experience, and for that I will always be grateful.