Chris Hill said this quote

The fear of taking a shot at anything in life, lives in the fact that there are no guaranteed outcomes and this notion sadly, paralyzes so many from ever taking a chance, because they can never be certain enough. It's important to understand that the fear will always be there, that's what makes us humans, and those of us that end of leading successful and fulfilled lives have just learned to better tame and dance with that fear more than others.