Freelancing/sell a product.

Sell services/freelancing for companies. Work on projects when you're not doing things for customers.

Control over your time is crucial. Try to charge according to value (if you're going to make this much off of me doing this project for you, me charging you 10% of that profit is nothing!) rather than per hour.

Once you can make enough to live comfortably, balance your time and income effectively.

If you can, try to turn some of those pursuits in to passive income. You'd be surprised the simple things people will pay for.