I want to be an astronaut too! besides writer, opera singer, tango dancer, coach, animal healer, mathematician, kryptoanalyst, massage therapist, sculptor, project manager...
Haven't read the book yet unfortunately. Too many other books I want to read

It's in the queue though.
Ragtag : I've been thinking a lot about my purpose too. I think we should not confuse our interests and our purpose. We have many interests, but that doesn't mean we have many purposes. I don't know, maybe looking for one purpose is really not the right thing for you. But if you have one message, you can have many ways to express this message! As an example, imagine you find out your purpose is to teach people the LoA

Well you can do so by being a kindergarten teacher, or a coach, but you can also write a book or be a journalist. you can become a great actor and talk about the LoA all the time. You can learn ten languages and travel the world to tell everybody about it. You can paint pictures illustrating it. AND you can do all of this together
As a Renaissance Soul you have many possibilities to express your message and can use more than one at the time. Great isn't it?
The greatest difficulty is to find the message I guess. Good luck with this!