In 1907, William James complains that psychologists have ignored the topic of "the energies of men"—that is, the practical stamina available for "running one's mental and moral operations".
Have good frameworks emerged for this in the past century?
jstor.org/stable/2177575
Conversation
There's "cognitive load", "ego depletion", "self-efficacy", etc… none of these really seem to hit the nail on the head here.
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Just speaking personally, I notice that while agency, rest, and restoration ensures that I stay well above the burnout line, my James-energies still vary quite a lot within that domain day-to-day.

