All of life’s experiences are teachers in some sense, challenging us to grow and evolve. Although the Persecutor certainly provokes a reaction, the Challenger elicits a response by encouraging the Creator to acquire new knowledge, skill, or insight. Both roles provoke change, but in different ways.
The Author of this Quote

Author
David Emerald
Teaches "a positive approach to life's challenges" - TED: The Empowerment Dynamic