I'm kind of on the fence about competitiveness. Despite what they may claim to the contrary, competitive people typically care alot about what/how other people think about them - perhaps too much. You'll frequently hear super competitive folks trying ham-handedly to justify their tendencies with statements like "I don't really care about what other people think, I'm mostly in competition with myself to be the best I can blahblahblah..." Yeah. Right. Typically, the only folks being deceived by these kinds of comments are the folks that speak them.
Super competitive folks may suffer from some deep-rooted insecurity or identity crisis feeling constantly compelled to compare themselves (and their worth) to others, but like most every human attribute, there is a sort of yin/yang sin/corresponding virtue thing going on. The fact is, competitive people usually DO achieve higher degrees of excellence than their live-and-let-live oriented brethren and constantly push the limits of acheivement. The world is undoubtedly a better place for their efforts.
Are you a particularly competitive person? If so, do you ever find yourself 'creating' competition in different activities in your life (work, play, etc)? Do you find that you tend to think of people as falling into 'winner' and 'loser' categories? Do you think the field of planning lends itself to competition and if so how/where does it play out?
Does anyone live with a 'competitor'? How's that working out?