Why is this kind of vague advice popular? Just because the author is famous? If someone else had written this would anyone care? Personally, I got tired of hea

Why is this kind of vague advice popular? Just because the author is famous? If someone else had written this would anyone care? Personally, I got tired of hearing famous people tell me I should read more, work on things I love, be an expert (or don't be an expert), "make things", blah, blah, blah many years ago.