Selling is the oldest and highest-paying professional in existence. Good salespeople control their results, have no limit on their prosperity, and generally get their way in life.
So why would anyone be averse to selling? They've simply been taught wrong (or not taught at all).
The Seller's Mindset is not only for business, but life itself. Use what you learn here to earn commissions, build your businesses, win debates, barbershop arguments, settle on favorable negotiation terms, and generally get your way.