If for some reason you can’t make big preparations, at least study.
Take some time to learn some survival skills, basic gardening, and first aid. Hit the library, take classes, and search the internet while we still have such resources available. The natural disasters around the world are trying to clue us in that we don’t have much time left.
I may have to go this route myself short of winning the lottery. Feel free to comment with your own ideas and suggestions. Now that I’ve recovered my password here maybe I can update it more often.