To monetize your mind and turn it into a successful business, you need to have a skill or body of knowledge that you enjoy, build an audience of people interested in your topic, and offer a product or service that people are willing to pay for.
It's important to avoid building a large audience around a vague topic that is not easily monetizable.
The two best business models for beginners are to offer a product or service you enjoy making and that people want to buy, or to position and package your knowledge in a way that makes it valuable and tangible for customers.