I'd say I am definitely a leader, and a very good one at that. Not to boast or anything, but it's what I do for a living... Not to dig into my job or anything, or even expose what it is, but I took the worst performing branch within a company and turned it into the highest performing store within the district it belongs to in just two months, and not a single staff change was made outside of putting me in charge.
I even had major executives calling and messaging me to congratulate me on my endeavors. :)
Outside of that, I've led multiple forums in the past (nothing as popular as this, but members in the upwards of 250,000+). I've also took on the leader role of any group projects I had in school.
Even when playing basketball (as a kid until now), I always assumed the Point Guard position (person who runs all the plays and outlines the offense to ensure points and whatnot), and when I played for raelz (not NBA) my coaches always put me as the Point.
I'd say I kind of grew up with a natural talent to lead.