May (probably will) happen to any of us. At least you got s good night's sleep .
Give your Surface Book the same love you had for it the day before. It is a fine machine, and the mark shows you use it.
Now that is a a great way of looking at it. I have a slight ding in the tablet part of the cover and was thinking of returning it. But it works fine and I just keep it with the understanding that it's part of its character.