Earlier quoted context omitted.
> This is quite similar to the cognitive and decision fatigue principle which indicates that each of us only has a limited pool of cognitive resources and so we must be very selective in choosing what activities we engage in. Watch out — many of the studies which displayed “cognitive fatigue” (I assume you actually mean ego depletion) have not been replicated successfully. http://www.slate.com/articles/health_and_sci…
The general idea even in a loose, more metaphorical sense, holds however. 'Mental fatigue' is well established, and your volition along with mental faculties generally become harder to exercise the longer they are used without break. The specifics are disputed, but we needn't be so specific for the advise to hold.
> But that story is about to change. A paper now in press, and due to publish next month in the journal Perspectives on Psychological Science, describes a massive effort to reproduce the main effect that underlies this work. Comprising more than 2,000 subjects tested at two-dozen different labs on several continents, the study found exactly nothing. A zero-effect for ego depletion: No sign that the human will works as it’s been described, or that these hundreds of studies amount to very much at all.