Oathbringer (The Stormlight Archive, #3)

by Brandon Sanderson

That wasn’t so uncommon a feeling for him. He felt good lots of days. Trouble was, on the bad days, that was hard to remember. At those times, for some reason, he felt like he had always been in darkness, and always would be. Why was it so hard to remember? Did he have to keep slipping back down? Why couldn’t he stay up here in the sunlight, where everyone else lived?