For me, I love to work on my own projects, even when they begin to suck; pushing through the grind is weirdly rewarding.
But the moment I have a boss telling me what to do, pressuring me to perform, and my work profiting someone else, my enthusiasm wanes toward mere professionalism; I perform the job, not live it.
I'm trying to put less pressure on myself and care less, but when it's 9 to 5 all week...you kind of have to live it. I barely have any energy after work to do things I enjoy. By the time I've started to relax and forget about work during the weekend, it's already Sunday night.
I'm not sure if you mean 'toxic positivity', but I find that quite draining. It's clearly another 'motivational' groupthink technique, to distract from the fact that you're slaving away for someone else's bottom line.
We have a lot of "yes men", including direct managers, who are quick to agree to any deadline and feature no matter what. I feel like I always have to be the bad guy, and it's draining.