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No neuroscience, evolutionary psychology, Ainslie, picoeconomics, or even phenomenology, here, but I found this paper helpful.
It makes distinctions between first-order desire; second-order desire; “will;” ambivalence; regret; temptation; and two types of indifference, all useful distinctions.
I was exploring “illegible felt sense-ness,” looking for a way to get some kind of handle on (and possibly mediate “between”) a tangle of layered, interpenetrating, illegible, Ouroboros-like, perhaps terminal (perhaps not) desires/urges/etc. And I found reading the below surprisingly helped me to at least get a little closer to the clear core of my ambivalence.
Swindell, J. S. “Ambivalence.” Philosophical Explorations 13.1 (2010): 23-34.
Kelly, Rebecca E., Warren Mansell, and Alex M. Wood. “Goal conflict and ambivalence interact to predict depression.” Personality and Individual Differences 50.4 (2011): 531-534.
Wallenius, Marjut. “Personal project level of abstraction and project conflict: relations to psychological well-being.” European Journal of Personality 14.2 (2000): 171-184.