I used to think discipline was a personality trait. You were either born with a "military mindset," or you were like me—a chaotic creative who relied on bursts of adrenaline to get things done. Image Credit: Gemini Then I watched my friend, Elena. On paper, Elena is arguably the "laziest" person I know. She hates stress. She refuses to rush. She doesn't do "crunch time." Yet, over the last year, she has built a side business, mastered a new language, and transformed her healt