IS LIFE COACHING A SUCCESSFUL BUSINESS?

I have already received a brochure from New Insights and I have read through it. I am certain that I want to become a life coach. I am working as a Finance Clerk in the Government at the moment but I am really not enjoying my work. I spoke to my husband about what I want to do and gave him the brochures to read. Unfortunately he doesn't feel comfortable about the idea of giving out this amount of money for the course. He feels insecure about how I am going to make a business or a living out of this when I have completed the course. I really want to assure him that everything will work out for us. Can you perharps assist me in anyway.