How do you stay sane

I’m an environmental studies student and I’m learning terrible things everyday. I finally have a professor who isn’t afraid to tell it like it is and inspire views in us that would be considered radical by politicians. This is a change from a lot of my classes that seemed to go for a feel-good kumbaya vibe but that’s just not realistic. I live in Idaho and this winter we’ve been experiencing zero precipitation, 40-50 degree days, and today I saw a honeybee. I look around everywhere and all I see is an endless desire for unsustainable growth and consumption, and this polluted inversion my city has been in for weeks is not helping. How do you guys stay sane when you feel like everything is doomed?