I kind of hope someone on here could address the title and write their own thoughts on how one does "build their dream job." For example, I know I want to work

I kind of hope someone on here could address the title and write their own thoughts on how one does "build their dream job." For example, I know I want to work for myself, and I would LOVE to own my own business - I want to make the world a better place. But projecting that into both a concept that is a viable business and also knowing which concept to pull the trigger on is hard... Do I invest $200 here, $200 there? etc.