When I was born in 1970 with a rare genetic disorder called spondyloepiphyseal dysplasia congenita (SED) medical science wasn't what it is today and my mum and dad were treated terribly by the medical profession.
Leadership is getting players to believe in you. If you tell a teammate you're ready to play as tough as you're able to you'd better go out there and do it. Players will see right through a phony. And they can tell when you're not giving it all you've got.