Writing down your concerns and uncertainties—what you know and what you don’t know—undresses them. Once you lift up the curtain and turn the unknown unknowns into known unknowns, you defang them. After you see your fears with their masks off, you’ll find that the feeling of uncertainty is often far worse than what you fear. You’ll also realize that in all likelihood, the things that matter most to you will still be there, no matter what happens.