ERIK SPOELSTRA COULD have winged it. If anyone was qualified to give a talk on how to deal with a case of impostor syndrome, it was the former video coordinator who worked his way up to become head coach of the Miami Heat.

But Spoelstra had come to know his young sharpshooter, Duncan Robinson, well enough to understand that a heartfelt speech about believing in yourself wasn’t going to do it.

“I really wasn’t even a good high school player,” Robinson said. “I didn’t have any plays for me run in college — ever.”

And Spoelstra was talking about starting Robinson alongside free-agent acquisition Jimmy Butler?

“He’d just had a really successful summer league with us again,” Spoelstra said. “He’d broken basically all of our shooting records, and he was still struggling with his confidence and whether he belonged here.”

Spoelstra believed Robinson had the skill set to space the floor for Butler and the rest of the Heat offense. But it wasn’t going to work unless he could get Robinson to stop questioning whether he deserved to be in the role.