Fortunately, you are incorrect.

Human "creativity" is (EITHER) caused by previous influences (OR) indistinguishable from random
WILL cannot be random
FREE action cannot be caused by previous influences
FREE is incompatible with WILL

This is all bunk taught to you by a group of people hell-bent on getting you to suffer.

Human creativity comes from a place outside our 3D world.
And it comes to us in response to our desires, our vibrations (of our being) sending out to the universe and attracting like vibrations.

The problem with Think and Grow Rich is that it is trying to convey concepts that most people have never heard of. Else, the whole thing could be written in one page.

So, humans have free will, inside of a system.

The first layer of the system is called the Causal Plane.
What most people describe this as, is a place filled with primatives, such as tree, person, love, and on this plane is where you attract the things you are thinking about into your life.

But then we have to discuss "thinking"
And then we have to discuss "things"
(neither of which are what you think, based on what you said above)