In this episode of The Underdog Physician Podcast, we interview Glenn Poulos, LinkedIn Top Voice, author of Never Sit in the Lobby, and founder of Gap Wireless. Glen shares his journey from a government technician in the 1980s to building and selling multiple multimillion-dollar companies in the mobile broadband and test-measurement industries. He reflects on the timeless value of in-person sales relationships, even in an AI-driven era, and offers hard-earned lessons on entrepreneurship—maintaining financial runway, protecting equity, focusing on customers, and learning to “jump over the wall” of fear. Glen candidly discusses past missteps, including over-expansion that nearly bankrupted his company, and how disciplined focus led to a $20M exit. Now leading a Florida-based utility testing firm, he emphasizes due diligence and creative deal structures in acquisitions. Beyond business, he finds purpose as a charity DJ and mentor, reminding listeners that every impression is a lasting one—“make each one positive.”