My bleak optimism is:
The global economy is really fragile and as the weather disasters blow holes in various parts of the world, the ability of the world to rebuild polluting infrastructure will get increasingly compromised.
So if we're really lucky we'll get enough painful chaotic degrowth to cut emissions.
And I guess the more we can do to stop buying things from global supply chains the better? More boycotts harder for them to rebuild.
So I guess have friends doing gardening, cooking, low energy food preservation and crafting?
Maybe practice camping?