When you hit the point of saying "if I just work one more hour I'll solve this", remind yourself that working long hours is counter-productive. And remind yours

When you hit the point of saying "if I just work one more hour I'll solve this", remind yourself that working long hours is counter-productive. And remind yourself of all the times you came in to work in the morning and figured out the impossible problem from the day before in just 5 minutes. (Long version: https://codewithoutrules.com/2016/02/24/go-home-already/ https://codewithoutrules.com/2016/02/24/go-home-already/)