How certain do you need to be?
When presented with a new opportunity, or a risk to be avoided, do you have any doubts?
Because there are always doubts. And then we multiply it, waiting for the doubt to go away, for it to not only be a shadow of what it was, but beyond that…
The desire to avoid change is rarely held to the same standards as progress. By the time the shadow is gone, it might be too late.