Not everyone who wants to build a successful business doing what they love is going to "make it."
What separates successful people from unsuccessful people? It's not luck. It's not even necessarily intelligence.
The commitment to your end result and your BIG WHY(s) behind it (your driving force). Without commitment, you'll have a default plan–a back door out if things get too hard or scary. With commitment, you make decisions every day to keep moving forward no matter what.