Completely understand the customer by seeking an intense, complete and empathetic understanding.
For me, it's often about consumption behavior. I focus my energy on understanding the heavy user. They are "odd" but hold opportunity. I ask: how do they use the product, what motivates them, how can we clone them.
Woo your biggest fans. This rule says concentrate your efforts at understanding on the 2 percent of consumers that personally drive 20 percent of sales and invite their friends and colleagues to enjoy you.