"How can you harness the energy of your mavericks? How can you turn negative energy into positive? The answer is to throw down a challenge. Rebels can be very critical so turn the situation around and ask them how they would do things better. Don’t get into an argument with them. Take their ideas on board. Praise them for good proposals. Encourage them to find new and better ways to do things. Thank them for their criticisms but insist that they make positive suggestions too."
Regarding the term maverick, I read the following definition on Wikipedia:
"A maverick is a person who shows independence of thought or action; a non-conformist or rebel. The word is from Samuel August Maverick, a Texas rancher who refused to brand his cattle."