Success, fame, etc

I bet you've read in a lot of articles or self help books or have been told by some gurus on T.V. that sucess and fame are overrated and if we want to be happy we shouldn't be mindlessly running the rat race. So today, I had a question in my mind. The people who write these books, the people who give these little speeches, aren't they all famous and successful themselves? Some of them are only famous because they're telling the world not to run after fame. What an irony! Who are these people to tell us not to strive for fame when they are themselves everything that they tell you not to be?

And you only listen to these people because they're famous and successful! Why in the world would you listen to anyone who has done nothing special, someone who is just a common man?

P.S. - I'm not trying to make any point here. I just had this thought today and felt like sharing it