[pasbesoin]

Don't just look at the problem, itself. Look at the circumstances.

Get yourself healthy. Get some balance -- social interaction. New and different and positive inputs.

I think you'll sit down to the problems you're working on, refreshed.

And problem-solving might have renewed purpose. Improving the world you're engaged in.

Best wishes.

P.S. Another way of looking at this: Get some "domain expertise". I was always a lot more effective when I had a domain to which to apply my skills -- and that motivated me to improve those skills, to improve the domain or the instance of the domain with which I was engaged.

Also, what was it Larry Wall said?

http://threevirtues.com/