The first is our old friend, the belief that…

The first is our old friend, the belief that one's abilities are limited by one's genetically prescribed characteristics. That belief manifests itself in all sorts of "I can't" or "I'm not" statements: "I'm just not very creative." "I can't manage people." "I'm not any good with numbers." "I can't do much better than this." But, as we've seen, the right sort of practice can help pretty much anyone improve in just about any area they choose to focus on. We can shape our own potential.

— from The Mind in the Cockpit

Also belongs to

Related