Starting out to make money is the greatest mistake in life. Do what you feel you have a flair for doing, and if you are good enough at it, the money will come.
When you sit with a nice girl for two hours, you think it's only a minute. But when you sit on a hot stove for a minute, you think it's two hours. That's relativity.
When confronted with two courses of action I jot down on a piece of paper all the arguments in favor of each one, then on the opposite side I write the arguments against each one. Then by weighing the arguments pro and con and cancelling them out, one against the other, I take the course indicated by what remains.