I don't worry about things like that.
I get up every morning, write God a letter, and give Him every minute of the day.
If I do that, I don't need to concern myself with the future. Nothing is certain, except, at this moment, I am alive. And for that I am grateful for the gift of birth and, hopefully, to contribute something positive to our planet.
My purpose is to contribute to the happiness of others through writing and public speaking. If each one of us has a purpose, a goal, or a dream, we don't need to concern ourselves with preparing for something we think might happen. Trust our Creator instead.
This is just my opinion, and thank you for this interesting question. Blessings, Sparklea :)