I wouldn't worry about switching off until you find yourself mentally wrestling with problems that cannot be solved like that. Relationship problems are a good

I wouldn't worry about switching off until you find yourself mentally wrestling with problems that cannot be solved like that. Relationship problems are a good example. Usually, no amount of continuous 24/7 thinking is going to bring you to a good answer. Also if you are tired and can't stop thinking about something, but can't actually solve it without rest, you might want to investigate techniques for clearing your head. Finally, if you're concerned about negative side-effects of work obsession, like not being able to 'see the forest through the trees' then you might want to as well.