I think living alone is a good precourser to travellng alone. They are not exactly the same, but living alone you learn to rely on yourself, learn to entertain yourself, and be alone at times.
I'm living alone again (THANK YOU JEBUS) and while at times I curse it, because all my friends are in relationships and I am not, so at times nobody wants to go out...I find things to do with my time that are enriching, and then I feel good about myself, which in turn makes me feel good about living alone.
I sorta do the same thing on the road. If nobody is around to talk to I'll work on my Arabic penminship or reading about the area I'm in.
In Belize I had a day of 'no friend down time' and I spent it reading a magazine, and the history of Malcolm X, in a hammock. I felt good afterwards about my learning and relaxing.
It's always good to bring a game plan of what to do when you're feeling lonely. Maybe you can think up things before you go and that will help you when you get there. Hand held Tetris is amazing by the way
