How to start


How should I start coaching? If I don’t know yet the niche, should I start as a life coach in general or do I have to pick a niche from the beginning and start coaching on that niche?
Just to be sure, a life coach treats more general problems?
And if I’m still not sure about the niche, what would be an advice to start with? It has to be something appropriate to my past experiences that I figured out?

Thank you!