Oh God — you started with my pet peeve. Add to it, people who’ve never sold anything but how to make money programs teaching people how to make money. It’s everywhere. The IMDB has a page telling new actors not to buy “how to break into acting” programs.
No matter the industry, Steven Pressfield has the must succinct advice. DO. THE. WORK.
That’s it. That’s all there is. The rest is subjective. Butt in chair. Do the work.
Love your writing — just got another of your books. Thanks for what you do. :)