Thinking through problems and solutions. And reading about others problems and solutions is just as valuable. Most valuable, but costliest, and riskiest is experiancing problems and solutions.
Everything is a "problem" and has a "solution", is the way youw ant to frame your life, and try and build a genralised way of thinking that solves the problems with solutions.
take for example
@BlogPro he has a bit of a sore back, and we brainstormed together the problems and symptons, and what we had in common, and i recommend a new solution that he hadn't heard of which was using an ergonomic keyboard, in his core all day sitting position. That is probably my last secret of what i used to cure my backpains before.
You have to see the problems you face as like that, they can have good solutions, if you bring your experiance to the table.
Every day if you have a problem, of "I have $0, how i get $50, 1 million/10 million, whatever" you will have to sit down and think, how can i solve this cash flow problem?
As biggie said, more money more problems! lol Start your problems small, and build them up, as what you can handle, allow yourself to be pushed by finding solutions, but don't stretch to far beyond ability and vision.