I am very curious since there are wide branches of niche programmers here and I would like to ask the ones that made some program (Wordpress theme, add-ons, from the ground apps...) and started monetizing it.

Can you tell me, what steps you have had to go from zero to a hero? You know,

1. Idea, 2. ???, 3. Profit

What routes have you taken, where did you started selling it and what was the growth over some period of time?

I have started writing an article about the processes, but most then everything, I am interested in hearing how other people did it.