Once upon a time there was a man who told me that if it's messed up and untidy in your surroundings, it gets messed up and untidy in your head. And of course, at the same time; if you clean up and things are in order around you, it gets neat and tidy in your head.
I'm a person who likes to keep it clean, but it's not always I'm good at tidying up. After the man told me this simple rule, I have always cleaned up in my apartment if I have felt frustrated or bored.
And .... it helps ... EVERY TIME.