The Rabbit Who Wants To Fall Asleep, has been created by Swedish behavioural psychologist and linguist Carl-Johan Forssen Ehrlin and is currently outselling Harper Lee’s Go Set A Watchman and Paula Hawkins The Girl on The Train.
The 26 page paperback, which is the first self-published work to ever top the Amazon charts, uses psychological and positive reinforcement techniques to help children relax, focus and eventually drift off.
Source: Bedtime phenomenon: scientist develops book to send children to sleep in minutes
Not to be confused with Go the F to Sleep 😉