An ability to walk

Walking is step by step. No one tries to teach a toddler how to walk and asks them to skip, or hop, or jump.

I've been thinking recently how artistic achievements (and probably everything else) are gained by not being afraid of taking the first step. Then the second. Then the third. Knowing that you might get too tired by the eighth or ninth step, but that you'll still be farther than at the start. And that's really what's worth striving for-- the want, the desire, to be further than you are right now.

I've recently liked saying "failure is just an excuse to learn a better way."

Don't be afraid to keep walking. First steps aren't always the hardest, but persevere past problems. When you're done, every little step will have made up a marathon.