#29: The Truth is the Most Important Thing
This may be the case for some doctors, but it was certainly never the case with mine. He would sometimes tell me that he would refuse to treat me unless I changed a certain lifestyle habit or other. However, there are probably many other medical professionals out there that think like this.

One time, I went to see him, and I was complaining of headaches, chest pain, and coughing up blood. He told me I may have a chest infection and wrote me a script. When I took it to the pharmacy, the pharmacist read it out loud. It said, “Stop smoking!”. I now have a new doctor.