Building Niche from your past

Hi Brooke,
I’ve been thinking about having a coaching business but I get stuck on the niche market. I was thinking it would revolve around something I have been through and ‘figured’ out. I kept looking into the future because i have thoughts of my past that make me think I’m not an expert in anything. Today I started to wonder if maybe I can use my mistakes to help others. For example, I raised four teenagers in a combined family ( is that what you call it?).
It was so hard. We made soooo many mistakes. Our kids did everything to challenge us. And they made it through! We made it through. Anyways I not sure I’d be an expert , but i certainly can speak about what can go wrong… haha
Is that something I could build on?
Thanks so much,