I had a recent conversation with my brother. He is in the fitness/health industry in Southern California. He shared with me that one of the largest forces perverting his ability to help people become healthy, is the fact that he derives his livelihood from this endeavor.
People come to him saying "help me to be healthy." When he then offers them his program for health, the response is "I don't want that, I want some other program." They then leave, and go somewhere else where they are given what they want, instead of what makes them healthy. This creates a strong incentive to offer people not what makes them healthy, but rather what they want, so as to keep them around as paying customers.
His need to feed, clothe, and shelter his family is set in direct opposition to his desire to help people be healthy, precisely because he makes his living by helping people to learn to live a healthy lifestyle.
The connections to 'professional Christian ministry' are boundless...