One thing I learned growing up is to quickly adapt to pretty much any situation. So I'm as comfortable at a black tie event in Westminster or The City, as in a divey Soho bar or hostel abroad, or even trekking through the mud somewhere (preferably on my way up a mountain). There isn't really much which will catch me out - to be honest, the variety is probably what I enjoy most.
I'm pretty much unflappable and generally happy, and easily find the positive in situations - but not the annoying sort. I'm more likely to be quietly getting on with my own life... unless you get me started on a topic, then you can count on me to provide an encyclopaedic account and arguments in favour or opposing from any (and every) perspective.