Sean Castrina is a serial entrepreneur who has started more than 20 companies over the last 20 years. He still seeks to launch a new venture annually. He is also the founder of The Weekend MBA, a two-day LIVE event where veteran entrepreneurs share strategies and tactics to help business owners build an action plan to achieve breakthroughs in their business. Sean is also the author of 4 bestselling business books and hosts a popular business podcast, “The 10 Minute Entrepreneur”. In this episode of Winning on Main Street, Sean shares his journey into entrepreneurship and why $250,000 is a magic number when it comes to scaling a business.