Don't go to sleep! / Stine, R. L

Matt, determined to move out of his tiny bedroom, defies his mother and sneaks into the guest room to sleep, but he soon wishes he had listened to his mom when he wakes up in a different reality.

Matt hates his tiny bedroom so one night he sneaks in there and his life changes. Every time he falls asleep, he wakes up in a nightmare.

Each time Matt sleeps in the guest room, a reality warp causes him to wake up the next morning as a different person.

Matt, determined to move out of his tiny bedroom, defies his mother and sneaks into the guest room to sleep, but he soon wishes he had listened to his mom when he wakes up in a different reality.