I sympathise. Not sure what cg means by MSM but it sounds a little conspiracy-theory-y to me. Main stream media is generally reporting real life events which are a result (to some extent at least) of man-made climate change. This is real.
However there’s no good going to come from crippling yourself with worry. I am extremely concerned as well, and spend a lot of time dispairing at mankinds complete disregard for what is coming. I’m able to cope as I realise nothing that I do as an individual will make any difference, and I need to concentrate on living a fulfilling life, providing as best as I can for my family, whilst minimising our impact – but accepting our impact is negligable in the grand scheme of things.
I hope your sessions with the psychotherapist can help perhaps put things in perspective and help you focus on the good things in life.