Becoming a "billionaire on purpose" means strategically building wealth by focusing on solving major problems, creating immense value for others, cultivating high-demand skills, relentlessly learning finance/business law, limiting tolerance for mediocrity, and aligning actions with a clear, purpose-driven vision, not just chasing money, which often becomes a byproduct of serving customers and building strong, scalable systems. Key principles involve prioritizing purpose over pure profit (using profit as fuel), focusing on customer needs, embracing innovation, and building strong teams.