Now I try to protect one hour in the morning and one in the afternoon where I turn off Slack, and I don't check email. I might read, or write in a journal, or just go for a walk. It's become one of the most important parts of my day. It's when I'm most creative, and when I hit on ideas that can take the company in new directions.

You know, as Olympians, you set four years to build up to this moment. And then, after it's over, you're kind of lost in a way. You don't really know what to do. You don't know where to go. You don't know who to talk to. And a lot of us do suffer from depression.

If you get stuck, get away from your desk. Take a walk, take a bath, go to sleep, make a pie, draw, listen to ­music, meditate, exercise; whatever you do, don’t just stick there scowling at the problem. But don’t make telephone calls or go to a party; if you do, other people’s words will pour in where your lost words should be. Open a gap for them, create a space. Be patient.

There's a term that gets thrown around a lot – keyboard warrior. It's used to refer to someone who makes aggressive or abusive posts online, often anonymously. I like the name. In my mind, when I read something especially horrific on my feed, I imagine it's written by a lone person unacquainted with personal hygiene practices, dressed in a poorly fitted super hero costume – one that is baggy in all the wrong places.

Just normal people from my hometown, from my country.

The word says it all. To be a friend means that they are always there, for the good or the bad.

These tics do bother me. Could I play a match without them? Yes, without some of them. I don't have to touch my nose or put my hair behind my ears before I serve. That's possible to stop. Not putting the bottles in front of my chair, I could go without that, too. But adjusting my underwear, that I could never get rid of. It's impossible.

I don’t think I have one in particular. I am pretty calm. Just some small things that I better not comment on :-).

Playing tennis, competing, winning, but also being at home in Spain, in Majorca, with my friends and family.

Selfishness and no respect for the others.