You can recognize a good tale/story when you pause from it to continue your life, and realize that your life is dull and insignificant in comparison.
An excellent story is the same, but now your second thought when you pause is that everything you do in your dull an insignificant life leads up to that great story.
A truly brilliant story makes you realize that you are living it yourself, or could be if you didn’t focus on someone elses story.