In most sports, your brain and your body will cooperate... But in rock climbing, it is the other way around. Your brain doesn't see the point in climbing upwards. Your brain will tell you to keep as low as possible, to cling to the wall and not get any higher. You have to have your brain persuading your body to do the right movements.

Doubt is faith's shadow.

I've read that it's the smell some carnivores use to find their prey. Imagine the trembling victim trying to hide, but knowing that the smell of its own fear will kill it.

A horse perceives eye contact as provocative, as if it and its status in the herd are not being respected. If it cannot avoid eye contact, it will react in a different way, by rebelling for example. In dressage you don't get anywhere by not showing respect, however superior your species might be. Any animal trainer can tell you that. In the mountains in Argentina there's a wild horse which will jump off the nearest precipice if any human tries to ride it.

All interesting heroes have an Achilles heel.

But perhaps that's why we take snaps...to provide false evidence to underpin the false claim that we were happy. Because the thought that we weren't happy at least for some time during our lives is unbearable. Adults order children to smile in the photos, involve them in the lie, so we smile, we feign happiness.

As a writer, you have to believe you're one of the best writers in the world. To sit down every day at the typewriter filled with self-doubt is not a good idea.