One hot summer does not a climate make. Here's the German record for low and high temperatures:
https://www.plantmaps.com/en/de/climate/extremes/c/germany-r...
As I said, read some books instead of knee-jerking that down-vote button. To use an oft-heard phrase in reverse: "Educate yourself", then act. Don't just cry 'Wolf!', do something and with that I do not mean wear a silly dress and walk with the other theatre kids of XR. Playing Malthus and declaiming the end of civilisation doesn't help either, neither does attempting to shout down those who call for action (not activism, nor political action and certainly not the umpteenth doomed-to-fail attempt at implementing Marx's ideas).
What it is I do you asked? Well, I haven't flown anywhere for close to 24 years. I never had a car. I haven't lived in a fossil-fuel-heated home for more than 30 year. I hardly ever buy anything new - including computing hardware - 'cause I try to get everything second-hand or repair things which have been thrown away (which includes most of my computing hardware including the MacBook Air running Linux which I'm using right now). We hardly produce garbage on our farm due to the fact that we tend to shun 'products' and instead go for 'produce', i.e. fresh things sold by the piece without packaging. We live a good life without needing to have the latest (or any) fruit factory gadget or trendy whatsitsname and without hollering at clouds about the doom of the planet due to scary climate things. Instead of doomcrying we act, not 'for the climate' but because it makes sense. Try it, get out of the consumption rat race and live life for yourself instead of for whatever you've been talked into living it for.
That is my part of the current plan to stop the development, whatever you mean by that. What is yours, other than cries of doom?