Looking at changing jobs but don't know?

I currently work in sales am very happy with my job but i'm starting to get an itch to try something else. I have a husband and a daughter my husband works and also loves his job. What I really want to do though is change to law. I want to be a lawyers assistant. A change of pace. The thing that is stopping me is that I have no legal qualifications I am willing to study at my own expense though if given a chance but I'm also twenty seven nearly twenty eight. I think age may have a big part in it too HELP

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