I am involved in Greenpeace. And I just recently completely switched my diet over to near-veganism. So you try to do little things that you can. I recycle every single day. Every single thing in my house that can be recycled is.
If you are interested enough in the climate crisis to read this post, you probably know that 2 degrees Centigrade of warming (or 3.6 degrees Fahrenheit) is the widely acknowledged threshold for "dangerous" climate change.