There are many books about trading, as there are many bakeries and grocery markets, your book can stand as well as any other. My sister in law just finished a book and published it through an independent publisher. The book is not about trading. She found out that there is a huge market for any topic. Specially if you speak a language that will reach millions of readers. Just go ahead and finish it, you will always be able to say that you wrote a book, and that is kind of a title to be proud of.
Hypothetically, introverts are so introverted, they listen to no one except themselves, so they'll not buy your book.
I think if you're interested in writing you should write the book. Unprofitable traders everywhere are looking for a trading god to turn to, the next carrot, that last 'secret' idea to propel them into profitability. As long as it doesn't require hard work/studying, some people will buy it.
%% ME 2; may want to self publish it like Drawdown A noted. Frankly you got 2or 3 right almost/ 70% LOL IF we believed your last line Jack Schwager NEVER would have written his Top Trading books...........................................................................................
Jack Schwager made millions selling his books but not much from trading. Besides, this book could be a black swan, making OP millions and famous. So I agree with you sir.
Any book is just a theory, which is better to test personally in practice. And there are a lot of such books written, but did they really help someone to trade profitably so that they could be bought? As practice shows, in trading, your personal experience and ability to analyze and correct your mistakes are important, creating your own personal trading strategy, which will then bring you profit.