Oh one more thing to add:

11. when you go to any kind of medical professional about anything... get a second opinion. As a loner you cannot afford mistakes.

You cannot afford to have anything go wrong medically because the medical establishment is so terrible about single people. If your doctor or dentist says "you need to do this" smile.... leave, find another doctor and make sure that advice is accurate before you do it. It may take longer it might be a pain in the rear you but have one body and one life... it is worth it.