Knowledge you keep to yourself dies with your career; knowledge you give away outlives it.

There is a fear that teaching someone your method creates a competitor. Occasionally true. Far more often it creates an ally who remembers exactly who opened the door.

You do not need to be an expert. You need to be two steps ahead of somebody, and two steps is enough to be useful to a person you could name right now.

Answer their message. Take the call. Say the thing that took you five years to learn and would take them five minutes to hear from you.