Jimmy Buffett, the legendary singer-songwriter and creator of the Margaritaville empire, delivered his commencement address at the University of Miami wearing a cap, gown, aviator sunglasses, and flip-flops — receiving an honorary doctorate in music from the school near where he first began his career as a bar singer in Coral Gables. Buffett organized his speech around four rules for life, and this was the heart of rule number two: 'Make your avocation your vocation.' He broke down his formula for success as: 'Talent is 10 percent. Luck is 20 percent. Work ethic is 30 percent. Passion is 40 percent.' Passion, he argued, was the single most important ingredient — 'the rudder that steers your quest for success.' Coming from someone who had built a billion-dollar business empire from songs about margaritas and cheeseburgers, the advice carried unique credibility. Buffett had never chased trends or compromised his vision for commercial success. Instead, he had followed his passion so authentically that it became not just a career but an entire lifestyle brand.