No one can tell you that your plan will succeed. No one can tell you what their answer to your question will be. No one can guarantee you’ll make it home alive. They can’t even tell you how far down the hole goes.
If they could, if it wasn’t scary, everyone would do it. And then wouldn’t need to be done by you, now would it?
The coward waits for the stairs that will never come. They want to know the probabilities. They want time to prepare. They want assurances They hope for a reprieve. They’re willing to give up anything to get these things, including this moment of opportunity that will never, ever come back.
-- Ryan Holiday, Courage is Calling, p. 54