It is great that you enjoy educating patients and study the subject of happiness, femaleRN. You have found a niche where you can both give and receive and feel good about it.
I can identify with you, as I was really into giving lectures and gaining more knowledge some years ago. However, I focused more on my Art and pursued that interest. I hadn't taken an Art class since high school, but was able to do shows, win awards, establish a reputation, become rather well known, and make some money in the years when I did the public Art thing.
I guess I'm saying that if you want to become a motivational speaker, go for it. I did a lot of free Art instruction, volunteering, in the beginning, went to schools
and shared my interests with students. You'll probably have to do the same.
Good luck to you, femaleRN!