Travelling state of mind

There's something about travelling..Well, maybe not the travelling itself, but actually the preparing for a big trip, that makes us think about our lives. About what we want and what we have, and what is missing. Not sure why I always feel like I am in self destruct mode on the day before or the day I actually have to start a big trip somewhere. It's almost like I need to push away from my "other life" and that comfort I feel in it, and go in a different direction. So to do that, I sort of try to blow up my sense of the "other life" so I can walk away, and go into the unknown, towards the destination point of my travels. Not sure if it makes sense, or if anyone else can relate to this, in fact it might just be a musician thing. But it always feels like I am saying goodbye for the last time, even if I am coming back again, in a few days...