Writing is easy, you can always revise.
Life is first draft.
I've often compared writing to mountain climbing. It's easy to become discouraged and quit and it's easy to fall off if you're not careful. That fall becomes ever more perilous the higher you climb and yet there's something that keeps driving you to climb ever higher. When you reach the top and look around, you'll discover there's another mountain over there and a taller one yet on the other side. No matter how far or how high you climb, you can always find a greater challenge.