Pursuit of Challenge

I love the thrill of a challenge. I always have. If something comes too easy I usually get bored with it and I'm off to the next thing. I chose clarinet over trumpet, 48 keys over 3, I learned to snowboard instead of ski. Skiing you strap on your skis and away you go, snowboarding takes precision,fitness and balance to get down a hill without wiping out. At work I take the hard projects, then get more big projects assigned to me. My personal life, I choose difficult relationships instead of the cut and dry and enjoyable. Is it the thrill or the competition? Why am I drawn to this? Why can't I just take the easy way for once? Is it all worth it? At the end of the day I can say "I did that", but really, is that such an accomplishment? Is it worth such ego feeding competitive behaviour?