This is good advice. I often get stuck on some problem and try to power through it. This rarely works and I often have to give up frustrated. Several days go by

This is good advice. I often get stuck on some problem and try to power through it. This rarely works and I often have to give up frustrated. Several days go by and I forget about the problem completely. Then one day, I remember the problem and a good solution just appears. It works so often for me, but I never do it intentionally. Just take a break when you get stuck and do something else.