I am not a clinical nurse specialist. However, I thought I would answer and I hope it helps.
What I would say is this: As a clinical nurse specialist, you are part of a team of healthcare professionals with a common goal. That is to help patients. They come (or are sent) to us because they need help. Be prepared to help in any way possible. Know your stuff, or at least as much as you can to be able to deliver standard of care. If not, always have a means of finding out what the standard is. One of my favorite lines is, "if I can't help you, I will make sure to get you to someone who can".
The best outcome for each patient is the task at hand. Sometimes it is not a diagnosis, or even a treatment. Sometimes it is a "kind word". I have seen where that was more effective than any medication or treatment.
The other thing I would include is this: never forget the family ("loved ones"). They deserve to understand too. They need to be able to support their family member through the illness. "It takes a village." Just like it does here.