This would by more about your why? Why you believe in pursuing the goal? While you may have a passion for something, love doing something, doesn't mean it will pan out. But obviously it is taking the right actions at the right time, not missing opportunities when they come, and even then you will still be challenged with obstacles, and have to know how to problem shoot.
I don't usually argue with people on Face book. Usually they believe their right and tend to get stuck in the ego.