"I was just too exhausted from last week to explain that's not how beliefs should work."
It sounds like you know, or claim that there are objective facts beyond doubt. I am not constructionist, though I am not acting as I am absolute certain of things either.
"Most of my classmates already agree with the view that objective facts don't exist"
Maybe a solution is to act such as there _might_ be objective facts, then the constructionist talk be more durable. I mean then you can say "the constructionist might be right, although probably not."
"burning a lot of willpower in the hope that you're constructing a habit. Sometimes it works"
Interesting post! I'm wondering what your goal is or what your goals are. I recognize your situation a bit, I think.
I studied Aristotles Nicomachean Ethics and Rawls A theory of justice, and feminism through an university, and this helped me somewhat... I also did alot of therapy.
Do you have any philosophical goals?!