Who do you compete against?
Do you hold yourself to the standards of others, wishing you could be better than the next guy? Maybe it motivates you, but an even better method is trying to be better than yourself. How about pushing yourself each day to eat better or to walk longer after dinner? Goal setting is a great way to "compete" against yourself. You select the end result that you want and then it's up to you--and only you--to work for those goals. You'll be pushing yourself toward greatness, not creating unnecessary competition against others who can't compare to you.