Should I become a life coach

I am a physician and not thinking of my career path to change into a life coach.

However, I want to join certification program because I want to change myself. I want to break out of my shell and timidness and learn more of the skills. I think that I might be able to help my children more, be a good physician and wife after I learn these skills more in depth.

I feel like the certification course is for people who want to become life coach. So, I don’t feel that my reasons are compelling enough to spend $21,000 and also invest my time.

I need some help to understand if this is true or not.