Every time I finish a project, I take time to restart my environment.
I throw out all of the notes on non-relevant papers, and clean up all of the clothes from the ground. While working on a project, my mind becomes preoccupied, and cluttered. The clutter is useful, as I am able to apply my thoughts to solve whatever problems arise within the project at hand.
But when it is all over, I need to cleanse everything, so I have a chance to focus on dreaming up the next possibility, and executing it.