"Q: Why is targeted, mistake-focused practice so effective? A: Because the best way to build a good circuit is to fire it, attend to mistakes, then fire it again, over and over. Struggle is not an option: it's a biological requirement. Q: Why are passion and persistence key ingredients of talent? A: Because wrapping myelin around a big circuit requires immense energy and time. If you don't love it, you'll never work hard enough to be great." - Daniel Coyle