As someone older than you whose income well exceeds your target, here is the advice. Deliver value to the universe first. In at least an order of magnitude larger than your target. In other words, make people really really happy and they will vote for you with little green pieces of paper.

Job description is not so important, though I probBly would stay away from poetry. :-) Go find and listen to the Merlin Mann/John Gruber panel at SXSW where they talk about what made them successful. Obsession plus voice. This Concept works with my wife's clothing business. It works with my international tax lawyering. It works for Gruber. It will work for you.

Find an obsession. I backed into mine by a process of elimination - discarding things I did not like. Then give. Listen to that panel where they talk about how much they give away. Then reap the harvest.

When the harvest comes you will be a different man. Long ago I was whining to a wise old man about wanting a big black Benz. He said "When you can afford it you won't want it."

I drive a Honda.