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.