Before teaching sales tactics, first understand a new rep's personal motivations. This intrinsic desire for a better future is the only thing strong enough to help them push through the inevitable pain and rejection of prospecting.

A sales background teaches more than customer centricity. It instills resilience and the fearlessness to approach anyone in an organization to get things done, a vital skill for navigating the cross-functional demands of product management.

Ken Griffin stresses that selling is the most fundamental, yet often overlooked, entrepreneurial skill. It extends beyond customers to constantly selling your vision to candidates, vendors, and partners. He learned this from a mentor's simple plaque: "if we're all going to eat, someone has to sell."

You wouldn't bowl in street shoes; similarly, you can't sell effectively without the right mindset. Emotional control and mental readiness provide the stability and traction needed to handle rejection and pressure. This isn't a "nice to have"—it's foundational equipment you must prepare daily to avoid slipping at the first objection.

Sales professionals frequently encounter their most significant conflicts within their own organizations. Achieving internal buy-in and navigating cross-departmental friction can be more demanding than persuading an external client, underscoring the necessity of strong internal persuasion and relationship-building skills.

The stress and anxiety felt after a sales interaction goes poorly is not a weakness. It signals a high degree of ownership and responsibility—core traits of successful salespeople. Those who feel this pain are more likely to learn, adapt, and ultimately be trusted by clients.

A foundation in one-to-one sales reveals the human element often missing in marketing. This experience highlights the void of genuine storytelling and creativity in many marketing departments, equipping professionals to fill it with authentic, person-to-person narratives instead of just focusing on metrics.

Unlike corporate roles where activity can be mistaken for success, sales provides direct, visceral feedback. This "winning" mentality, born from the pain of losing a customer, keeps product leaders grounded in the ultimate goal: winning the customer, not just executing processes.

Early jobs without direct sales quotas, like retail, can build stronger foundational selling skills. When not pressured by a number, reps learn to conduct discovery and upsell based on genuine belief in a product's value, fostering a more customer-centric and authentic approach.