If at first you don't succeed, try, try again. These seem to be the words that best sum up an ambitious and driven individual like you. Even if you're not the best at everything — although you probably are at some things — you certainly give every effort your best shot and set a stellar example while you do it.
A go-getter, you're not afraid to step up to a challenge, whether it's spearheading a new project at work, coaching the kids' soccer team, or cooking for a big group. After all, someone needs to lead the charge. It might as well be you. Especially since it'll bring you success. Keep it up!