I spend 40 hours a week working for someone else for a salary but what I would love is to work on my own projects and earn financial freedom instead.

The way I read is, is that you want to work for yourself and become happier. Don't focus on the money, it is just a means to an end, which I guess for you means a stressless life living on a nice salary. Don't expect to get an idea from the magic inspiration factory, making something in a month and then waiting for the cash to flow in. It's not gonna happen. Working for yourself requires a resilient mentality, being able to deal with stress of not making money and working more hours than a week can hold. With freedom comes responsibility.

For me, doing stuff leads to inspiration to do more. Learning new things and facts about the world is what makes me come up with new ideas. When I encounter a new idea or phenomenon, I always ask myself what it could help me with. Is there a way to turn it, bend it, spin it so that something new can be done with it? Can it be better?