This is just my particular situation. I am fortunate enough to have some property on which to grow food. I try to keep abreast with current predictions for my locale. I know that my area will continue to get hotter and more humid, and flooding will increase. So I’m learning permaculture practices for climates that are already like that in anticipation of the changes. I also make as many connections with local produce growers as I can.

This is a very privileged answer to your question. But maybe looking at predictions for your area and meeting producers near you could ease some stress.

Going to climate protests helps me with thinking that at least I'm helping and then I feel less guilt for not doing enough. Is there an org you can join that works towards green socialism or is active at climate protests?

And even though individual action is not perfect it's better than nothing, look into how you can make your life, your home or your area more sustainable.

You can also check if there are rewilding efforts in your area and see if you can be of any help

I don't think individual action can amount to much. Hence now I am seriously considering working with an organisation that works on ground in the environmental sector.

Organic farms, communitarian organisations, animal rescue centres, citizens' fora all seem to be places where you can make a genuine organised effort, while feeling more connected to nature. Bonus points if they are socialist. In fact, I'd only go if they were at least socialistic about their praxis.

During COVID, I learnt by observation that such on ground organisations are the ones that determine a neighbourhood's resilience to a natural disaster. Hence volunteering to socialistic organisations made me feel less like I am sitting by watching the climate crisis unfold.