Check out this great link from GoSeeWrite.
After traveling for a period of time — I think somewhere within the 3-4 week period — you begin to feel as though you don’t have an address. You don’t have a home. You don’t have a life except for the one you are going to live that day. Your heart beats in almost a different rhythm. One beat scaring the shit out of you, the subsequent beat exhilarating your heart at the prospect of your next step.
It’s a good read with some great pictures.