Question of the Day?

So how do I know when to sleep? When my eyes begin to tire? If so, then I should sleep a lot during the day, including study time. When I think I'm going to get about 7 hrs of sleep? But researchers keep changing their reports. When I feel I've accomplished enough for the day? I'm sort of an overachiever sometimes, so that can be a problem.

I don't know. I do know I'm going to bed now. I have an interesting day ahead.

A man that flattereth his neighbor spreadeth a net for his feet