No explanation needed.

Sometimes you just have to take a day to shut the world out so you 
can open up to yourself and deal with your thoughts. To disconnect 
and enjoy your own company. And you don’t need to feel guilty or 
apologize or try to justify needing space. You just do what 
you need to do to take care of yourself, and that’s it. 
No explanation needed.
(Author - Dele Olanubi)