I don't know what the answer is Sam dog
When i first went too the doctor, the first thing they asked was "how's your mood"??, Apparently a vast majority of people have some form of anxiety or depression, it's the most common thing the GP's deal with, so it was that avenue before blood tests started, and the conclusion and diagnosis of PD was eventually reached.
Obviously my mood wasn't good because i didn't know what i was faceing i had just come too a cross roads in life, a breaking point.
But i don't think your alone I have been too one of these "well being courses", there was 10 one hour sessions, where you sat there with others and someone equally as nervous told you about alcoholism, fright n flight, and face your fears,only in the very last session was ''illness" mentioned.
Myself I do feel this ''illness'' has made me feel housebound and restricted my life, it is a loverly evening outside and i really want too be out there by a lake fishing, but physically i'm not up too, and mentally although i want too go it is a case when i get there i am looking for excuses not too be there because this parkinsons controls me and my life a bit more as time goes by, i'm also not the people person i once was i would rather have solitude than be with friends,explaining or justifying why i'm out of the house or how im feeling and avoid strangers totally.