An advisory board can help you leverage the combined wisdom of a group of specially selected people to enable better business decisions. It can also provide a number of other benefits of having key people closely invested in and associated with your success.
Choose a group of people who have both time and expertise to provide valued advice regarding your business. Despite the name, what you're really looking for is counsel, rather than advice. You want people who have more experience or are more knowledgeable than you are in the areas that matter most. Consider perhaps your most valued strategic partners, one or two personal advisers, your PDM and perhaps even a top client or two. Quarterly is a good frequency. Don't skimp on the surroundings and make sure you prepare the session with formal agendas, pre-reading and discussion points.