I have MH issues. I'm also a social worker. When I was seriously ill a couple of years ago, narrowly avoiding a section, I was treated with a huge amount of respect and deference. The CPNs made no secret of the fact that this was because I was a professional in the field.
I now work in independent advocacy, and the skills I have certainly came in handy when my daughter was seriously ill physically. Having me to advocate on her behalf meant that I got information and treatment that she was too sick to get for herself.
Incidentally, people with mental health issues, learning disabilities, dementia etc are entitled to advocacy.