Harry Potter fans will know that the two houses of Griffindor and Slytherin quite loosely depicted the two camps of good and evil.
Griffindor stood for courage, team work and the fight for justice. Slytherin for strategies linked with dark arts and agendas around exclusion of the weak. Both houses stood for pride and unity to their cause.
Ironically both of these houses have one additional big commonality. They both want to be better at what they do. They both want to win.
Voldemort could give you advice and feedback on how to win and be better.
Dumbeldore could give you advice and feedback on how to win and be better.
Both sets of advice would help you improve. But the benchmarks and measures of success were different because Griffindor and Slytherin were different in their vision and goals.
You get to choose who is on your board of directors and define your goals and vision.
If you’re in Griffindor, Voldemort will disagree with your approach and give you intense feedback to change. If you’re in Slytherin, Dumbeldore will disagree with your approach and give you intense feedback to change.
Only you’ll know who to listen to and who will support your vision. What do you want to be better at? Where do you want to win?
Will you choose Voldemort? Will you choose Dumbeldore? It can’t be both.