I would agree that psych. nursing is more laid back. Depending on what type of unit you work on it can be emotionally and mentally demanding. I work on an acute care psych. unit, and at times it can be quiet chaotic and emotionally taxing. However I love what I do and am fascinated by human psychology. I find there is always something to laugh about. At the same time we deal with pretty serious problems that people face in their lives. You have to be open and willing to discuss those issues and have a level of compassion in working with people in those stressful situations. ie: suicide, depression, living with psychosis, family issues etc. I believe each area of nursing has its pros and cons. It all depends what you interests you and what you love. As far as your question about once a psych. nurse always a psych nurse...most of the nurse I work with have either practiced psych nursing all their careers and some have switched from other areas. I've never seen a nurse that went back to other fields though once they started practicing psych nursing:)...