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The amount of conflicting advice in this business is unbelievable.
So true. Have you pondered why?
In some cases, it's because people are dishonest.
Some people parrot what they have heard rather than what works (or doesn't) for them.
Or if something doesn't work for them, instead of admitting it didn't work, they make excuses why it didn't work and continue parroting the advice of others because they believe them over their own experience.
Some people lie. Maybe they have no sales. Or maybe they have lots of sales but don't want to tell the truth about how they got them. So they make something up, perhaps using advice from someone else as a guideline for their lie.
Some people follow the "fake it 'til you make it" mantra which means they have to lie about the success they are faking.
And so on.
Then on the flip side you have people that are honest about what they are doing. But what worked for one person might not work for another. As a minor example (since my sales are minuscule), I once got a small sales bump when my book appeared on a site most authors would prefer their books not appear on. So, if I were to give advice based on that, well, that's not going to work for most people and others aren't going to want to try it. LOL.
And then sometimes you might not really know how you achieved your success. Years ago, I had a sudden sales increase on my website (not books). It's like, okay, I'm doing something right. Quality content. Good pricing. Etc. And if I had given that advice, I wouldn't have been lying. I would have been telling you what I did and the apparent results. So it would have been truthful so far as I knew. But, in that case, I found out within a short amount of time the real reason for the sales bump. A popular magazine had an article and my website was listed in there as a resource to buy stuff. Now, it may have been quality content, good pricing, etc. as the reason they selected my site, but the thing directly responsible for the sales bump was being listed in that article. If I hadn't found out about the article (by a customer referencing the magazine article when they placed an order), I wouldn't have had any idea.
So sometimes you only think you know what you know and you don't know what you don't know.