There's a difference between being proud of yourself and being cocky. Eventually, it gets very tiring. The best athletes are the ones that are humble. Going off about how good you are is extremely unbecoming. Humility is inherent in good people, arrogance is not. It not only speaks volumes about who she is as a person, but how she feels about herself as well. If she feels the need to let everyone know how good she is all the time, she needs to invest in some quality alone time to better understand herself as a person. Because for as long as I've heard of Rousey, she has always been loud-mouthed with nothing between the ears. No matter how good you are, no matter how much you "deserve" to toot your own horn, that childish and trite behavior will not earn you any respect or admiration. Maybe you'll get attention from people who don't know better, but that will fade. Acting this way is something anyone can do. Dumb, smart, rich, poor, it doesn't matter. A kid can be good at soccer and be cocky about it. But a kid who is humble about his/her skills is a much better person than the one mouthing off. One of these things is taught and earned, whereas the other could be done by a monkey.