I suggest you practice as a life coach on a close friend as a client for free to get started. There has to be a learning curve to know what to do. I’m not really sure what a life coach does. I think the speech you are giving to the group will be a great start to get comfortable with your new pursuit in this.

I get that you want this to be a career that can support you, but it is going to take a long time to realistically achieve gaining enough paying clients. This is something good for you that you enjoy though, wishing you luck in your endeavor!