I had the same feeling when I started my RTW bike trip. Loneliness is a *****, and my cycle computer broke within the first few days as well, but I was lucky. I met some great people in Hamburg, they helped me see the big picture, and I soldiered on. I can totally see where youre coming from though, and if it werent for Hamburg, I would probably not be 3000km in. Give it another try, organise a bit better, get this daily mileage bullsh*t out of your head and just do it for fun, nothing else.