The best players I've coached are great listeners—beyond that, they're humble, win gracefully, and lose with respect. Ultimately, I believe good sportsmanship is key: it should be one of the top three of four traits of a high performing basketball player. If you can conduct yourself as an athlete, that will take you a long way. A great basketball also needs courage and dry: they should be doing the "dirty work": they're the vocal leader in a huddle and are an extension of the coach. They're also heavily invested in their sport: they dive on the floor for loose balls and are the hardest workers at the gym. Essentially, nothing will stop them from giving basketball their all.