Daniel, my big brother, is eight years older. I'm lucky he didn't mind hanging out with his little sister and my younger brother.

I get my drive and determination from just winning and playing tennis. I know if I don't work, I won't get rewarded. It was a life long dream to win a Grand Slam so when I was able to do that it felt so good and I wanted to do it again. It's not that hard to stay motivated.

I love anything that involves the ocean. Swimming, snorkelling or surfing are all fun, which distracts from your mind that you are actually doing a workout. Being outdoors in the sun and the salt water is great for freeing your mind and feeling alive.

You're the best in the world, so you deserve those little perks along the way if you can get them.

In tennis it's easy to get greedy - and one Grand Slam doesn't feel enough any more.

I don't really remember the day we lost our home in the floods, but looking back I can understand how devastating it was for my parents. I was only six, so I remember us having to move to Adelaide - but not much of the actual day and night of the flood. We had to start all over again and my parents opened a café.

You've just got to get over that mental hurdle and those battles in your own head during matches when things aren't going so well. It takes time. It's probably all things I already knew, but for someone to talk about it maybe in a different way makes you realise things.