In a way, my hobbies are what I also do on a daily basis now, so are they still hobbies?
One is bass playing/music. I consider it a hobby in a sense that I love to play my bass to get away from it all, get
my mind off of things, chill out, etc., but I also play as part time work to make extra money.
The other is martial arts. I teach a style of Japanese swordsmanship and bo/spear. It's my full time "work". (I also teach a
style of Aikido, but more on that in a minute). But, it's also what I love to do when I have free time. I go
to my dojo (school) when no one else is there and practice. It brings me lots of joy, and peace, I find it fun,
as well as relaxing. I do the same thing with the bo (6 foot staff).
So, the above two examples qualify as hobbies in the characteristics of how they make me feel and what they provide
me when I'm doing them, but they are also my "work", so I'm not sure if they do fit the criteria of your question.
What I am finding, though, is that I do too many things (work/hobby), so I don't necessary have the time to fully enjoy
all I do, as well as dedicate enough time to be as good as I want to be at all of them. So, if anything, I deciding to do less.
I may stop teaching the Aikido style I do, because I'd rather have more time to practice and teach the sword style and bo.