If you are interested in the healthcare industry still then why not use your background as a nurse to provide information regarding the lastest breakthroughs in medical care and the posibilities open to them for various illnesses so when clients are working with their doctor for treatment they can make informed decisions. There is so much information on healthcare for particular illnesses even doctors can't keep up so many people might welcome help in this area. I would recommend the book Finding your perfect work by Paul and Sarah Edwards. It is excellent and will help you come up with some great ideas of your own.