The Thinking Behind The Tweet

"A round man cannot be expected to fit in a square hole right away. He must have time to modify his shape." 

Mark Twain

And...

Too often we focus on roles as if they are a singular or homogeneous thing. We do better when we treat roles as a package of different tasks, some stand-alone tasks, some interpersonal tasks. People succeed in roles when their talents and strengths mesh with the tasks in the roles. [and, of course, the people have an achievement-oriented attitude]