I wonder if the travelling/ hotels etc is causing some underlying stress? I spent 5 months in a hotel when I moved with my job - the catered food, lack of quality sleep (it's never as good when not in your own bed) and a demanding work schedule didn't do wonders for physical or mental well-being in my case. Maybe a holiday in Costa Del Back Garden would help? A couple of weeks back home doing nothing could relax you a bit and clear your mind. The 'back to basics' bit sounds like good advice too...