If you have an evidentiary hearing scheduled before a State Nursing Board, State Department of Health, the Dept. of Jobs & Family Services, or any other state regulatory agency, ideally hire a lawyer to represent you.
If you cannot afford an attorney, retain an attorney to provide you with unbundled legal services. For example helping your prepare exhibits or identify witnesses, prepare your opening/closing, etc. but not appear on your behalf and represent you at the hearing.
Don't just show up to an evidentiary hearing and represent yourself. You are doing yourself a disservice.
For example, I am involved in an administrative law case now that involves filing a petition for civil enforcement of an administrative law subpoena because a healthcare organization refuses to comply with the subpoena issued by the administrative law judge for our discovery prior to an evidentiary hearing. If you were representing yourself would you know how to proceed in something like this if you didn't have legal training?
Administrative law hearings are trial-like and do not underestimate the time and energy necessary to adequately prepare for an administrative law hearing.
If you are going to represent yourself, read as much as you can and prepare as best as you can.