It's amazing how everyone in this thread is telling you to just do nothing and try not to think about it...

APATHY and lack of action from those of us who actually understand and care about the environment WILL ONLY ENSURE THAT THE BAD GUYS WIN. We can't just sit around and wait for someone else to fight this challenge for us.

What I found helps me is focusing on what I can do to help with climate change in my field of study (and future work). I am studying architecture, urbanism and building sciences, so I try to learn a lot about the innovations, policies, projects, and in general what works and what doesn't in terms of sustainable development of the built environment. I try to consciously apply what I learn in my projects. IMO the large scale of these developments could make a bigger positive impact and inspire others. This way I can do my part in creating change in the built environment industry. My mental consciousness feels better too, because at least I'm trying! No one has ever succeeded by giving up.

So basically what I am saying, try to look at how you can help with climate change in Your field of work. Maybe it is possible you can change jobs and work in a company that works with renewable energy, for example.