Demetrious Johnson , one of the best to ever compete in MMA regardless of division, hasn’t always been willing to discuss his mindset. On Monday, the former UFC flyweight champion and ONE Championship flyweight grand prix champion took to Instagram to rant about an experience with a new vehicle purchase, why his mindset allowed him to find the positives throughout a frustrating situation – and hopes the story will help others change their perspective in life. During the video, he tells a story about how he hoped to drive his newly purchased diesel truck to Washougal, Wash., to watch his son participate in a motocross racing event, but issues with a leak prompted a trip back to the dealership. View this post on Instagram A post shared by Demetrious Johnson (@mighty) As the mechanics worked on the vehicle, Johnson spoke with another man in the waiting room who was also upset with vehicle troubles of his own. “I’m sitting there in the waiting room for two or three hours, well, more like two, on my son’s birthday, and there was another gentleman there,” Johnson started. “He’s been there for like five hours, and he was pretty pissed off.