We may be splitting hairs because this stemmed from a comment saying thinking is the most pleasurable thing in the world and you said anyone who thinks that way is lying to themselves.
Through your biological lens I have no choice but to agree, the thing that is most pleasurable in the world is mesolimbic dopamine pathway and the neocortex alignment (or so I'm told).
But through a conversational lens I guess it's all how you get there. And thinking->problem solving->success is a plausible path to get there which is why I disagree with your statement that they are lying to themselves, ignoring the existential truth that we are always lying to ourselves.