Creativity: Its just a hobby

Like so many people who craft and have an artsy side most of my creativity is relegated to using it as a hobby. 
I use some of my creativity at work. Applying it problem solving on my own or in collaboration with others, but for the most part I only really put it to use when I have "art time". Sewing, painting... These are time when I surround myself with the materials that I hope to use or transform. Sitting in the middle of my space with fabric piled here and there and paint all lined up on the shelf with brushes near by, boxes and bags and stacks and such just waiting. 
But this just a hobby. 
I have thought about what kind of effort it would take to change this into a "real" job.
By my calculations I would have to produce between 50-100 items and sell them every 10 days.
And while the creation is entirely possible, I need to figure out the marketing end if I am ever going to try doing this. I know people who have shops where they sell what they make and they take work from other artists. They put in the regular shop hours 6 days a week and then they still have to put in the time to make things to fill the shelves. Now one friend I know is lucky enough to have a spouse who is part of the business. He makes things as well as running the shop for her now and then. They also drag their adult daughters into things to either run the shop when they are off site selling at shows and fairs or to booth sit and sell. So really it is a 4-5 person operation and the daughters have regular jobs and the husband is retired. they work very hard for their money and it is far from a hobby for them.
For myself I still work full time, and I need the flexibility to take off on fishing trips and family visits and just enjoying this amazing place I live. I do not know if I ever could really make my creative side my primary income source. For now I think it will stay a hobby.