Perhaps my favourite story is 'Le Passe-Muraille' by Marcel Ayme. It's about a guy who wakes up with a weird faculty that means he can walk through walls. He's a very shy clerk, and he uses it to get revenge, or vent his frustration. ↗
I am still bowled over by this great young adult novel by David Levithan called 'Every Day,' which is about a character with no gender or body who wakes up every day in the body of a different person. It's a really impressive execution of a really great premise. ↗
I never thought in a million years I'd be that healthy girl who wakes up every morning to exercise. After being called 'cherubic and chubby,' I'm rocking a bikini! ↗