“The thing she had once loved about swimming was the disappearing. In the water, her focus had been so pure that she thought of nothing else. Any school or home worries vanished. The art of swimming—she supposed like any art—was about purity. The more focused you were on the activity, the less focused you were on everything else. You kind of stopped being you and become the thing you were doing.”

Matt Haig, The Midnight Library (Page 72)