Interesting post. Can't say I agree with all of it though. Through careful and strategic focus one can create their own luck. Luck is really just a set of circumstances converging to create an opportunity. You can put yourself in a position to try and create as many of those circumstances as you can and then take advantage of opportunities.
While success is not a single formula that everybody can follow, it is something that can be achieved by taking certain actions and thinking a certain way. Also, how you deal with the curve balls that invariably get thrown at you, can help you to take advantage of such situations and respond to other situations more positively in the future.
I guess the bottom line is that you can live your life just thinking everything is fate, luck or whatever, or you can live your life strategically and begin creating your own luck. Some successful people just want to share their experiences and get that message across.