Religion

Faith is good.

Recently, I was browsing a book in a store and came across an interesting thought on this topic:
"...faith is the most powerful force in the world. Everyone potentially possesses it, but in reality, only a few do. It seems simple: just believe in something. For example, believe in God...
For faith to transition from a potential state to an actual one, it needs to be trained every day... The brain doesn't know the difference between fantasy and reality. It also seems to lack a sense of humor and doesn't understand jokes. What you truly think is what you will get. If... you don't believe..., you are thereby planting vivid images of doubt in your brain. And then it rejects your... goal."
What do you think, is the author right?