I tell my girls this every day whether is teaching them to ride their scooters, working on their swimming or simply coloring. Paralysis prevents most people from ever realizing their dreams. And I want to instill in my kids fear is something you face head on, you never turn your back on it. As Hunter S. Thompson said, "never turn your back on fear. It should be always be in front of you, like something that might need to be killed."
http://johnwelbourn.powerathletehq.com/2015/01/02/lessons-learned/