People often say that a single spark can light a fire.

In careers, that spark is often a person. It might be someone early in life who cracks open a door, offers encouragement, or quietly shows what success can look like. What’s less obvious is how profoundly that very first connection can shape everything that comes afterward.

Consider 23-time Grand Slam tennis champion Serena Williams. Williams has often spoken about the crucial role played by her first coach—her father, Richard Williams. His belief in her abilities and his willingness to expose her to competitive tennis from an early age ensured she gained experience long before most of her peers. In this, she’s not alone: In sports, a first coach can recognize potential before anyone else does.

Or consider Misty Copeland, the Americ

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