Second career as market gardener?

While I am relatively young to be considering moving on to my second career, I have a strong passion for organic gardening, permaculture and educating others about the benefits of participating in and supporting their local slow food movement. I would love to start market gardening. I currently work full time because I need the benefits (health insurance mainly, a steady paycheck to pay the mortgage and taxes is nice) and so I do not have enough time to reach my full market gardening potential. I have been working towards it in my free time, expecting that one day I will realize I have created enough of a base to feel comfortable quiting my current career and starting my new career as a market gardener. What advice would you give someone like me who is longing to switch careers but doesn't feel like they can afford to "YET" due to current life circumstances?

Well, you need 2 things, a product and a customer.  Pick a few high value, in demand items in your area that grow well with what you have. I'm not sure what those are but maybe aloe, edible wild flowers, herbs, vegetable starts (like tomatoes or peppers grown from seed, whatever your market likes) etc. Start with a base of those and maybe 1 or 2 "crop" type items.  If you look up what Jack Spriko did with ninemile farm it might inspire you. here's a good episode if you like audio. http://www.thesurvivalpodcast.com/episode-1636-the-evolving-nine-mile-farm-plan

Did you do markets? Garlic is high value. Are you sure you can do the physical work over years to come? Have you got family members to help? Water? Good markets close by? Restaurants?