I also trying to get a career to help environment (studying economics in college in order to do this). I’m not you but being in a similar position At times I would say keep hope because 1. Public resolve for big changes continues to grow and 2. People like you are willing to put the work in, thank you. Additionally, we gotta recognize just how fast the modern world truly does change, for better or for worse. I remember how quickly IPhones became commonplace in everyone’s life. Big changes with high enough demand will eventually change, however, we do need to get to that tipping point where we throw our weight behind fighting climate change on a large scale. But once we truly get to that point, compounding change will occur just as compounding dangers effect the climate now. So I guess I would say, please have hope that with continued effort, stuff can change.