An excellent blog post worth reading: 5 Things I learned about Personal Growth by Moving. I especially agree with the first point: "You don't realize how much your surroundings are a part of your state of mind until you experience the contrast of going through your daily routine in a strange environment." This basically the foundation idea of Apartment Therapy, the site and the book!
The four other points include:
2) Try being healthy in a way that you normally wouldn't - you might like it!
3) If you push yourself to the limit, no matter how much it hurts, you'll be glad you did it.
4) You really don't need all of that junk.
5) True friendship will show itself when needed.