Point 1 is most important. There is no guarantee for success. You may be doing everything "right" but if you are not at the right place at the right time meeting the right people you can still fail. A lot of life is luck and life is not fair.
Point 5 is also important. By definition we are all average. And things where you are maybe 0.1% may not be things that you have passion for.
Very common though. I am very passionate about sports but my natural ability is probably bottom 10%. That means I have spent a lot of time pursuing something where I would never be "successful"in the usual sense. I also have met a lot of people who had the ability but didn't really like it.
Sport has still benefited me a lot and was totally worth it to me but in terms of success it was a total waste of time.
Point 5 is also important. By definition we are all average. And things where you are maybe 0.1% may not be things that you have passion for.