https://www.thealternativeboard.com/mastermind-groups-and-advisory-boards A mastermind group is when multiple business owners regularly meet with the single purpose of helping each other succeed. It’s an idea as old as tribal history itself, but the modern concept was outlined by Napoleon Hill, one of the all-time bestselling self-help author. He interviewed America’s most innovative leaders, including Henry Ford and J. P. Morgan, to discover their secrets for success. One thing they had in common, Hill discovered, was participation in a peer group.