In this episode of Grit Won't Quit, Tom sits down with Mark Endres of Keller Williams and Luminous Solar. They dive into Mark's journey of persistence—failing but never giving up until success is within reach. Alongside his real estate and solar ventures, Mark also runs a graphic design side business called Easy Street Graphics. The conversation touches on the challenges of selling solar panels, battling and overcoming depression, and how resilience plays a critical role in both personal and professional life.