I know sport can change the world, and that matters to me.
If you look back at British history, women being allowed to play sport in schools meant they had to change their clothing. They couldn't be running around in their long skirts and corsets, because you can't.
Having thyroid cancer in 2009 really didn't change my life at all. I wish I could say that I had this epiphany. But I knew I was lucky before that, so it's not like I suddenly realised how lucky I am.