Everyone has the potential for greatness. We must put our minds to it and make it happen. A few things that might help:
Unmercifully pursue your dreams.
Pursue the thing you are passionate about and spend time actively practicing them. Malcolm Gladwell popularized the 10,000 hours of practice to attain world-class status at anything, but I would propose you're learning curve is far shorter if you truly love what you do. It also won’t feel like a chore.
Your first jump is always the hardest.
When you jump of a cliff, you’re analyzing everything. The height, surface below, temperature of the water and so on. But on your second jump - you do it instantaneously, without much thinking. So jump.
Compete against people better than you.
Go places where you know you will be at a disadvantage. Competing against superior performers will expose you to strategies that enable you to alter your own. You'll learn tricks and spot hints to improve your own performance you won't learn in years of competing against rookies.
The equation implies: If you put a little amount of effort (1%) in everything you do, continuously, for a year, the end result would make you 37 times better than what you are now.
Small things matter
I have good news for you. You don't have to do grand things. You just need to do small things consistently. Nowadays media focuses on the noise and glamor. World records, multimillion deals, heroic acts. But not one of those extraordinary folks doing those things do them every day. Warren Buffet doesn't strike investments with a 50% return every day, Usain Bolt doesn't break a world record every day. They became extraordinary by working on their craft day after day. They studied. They trained. They worked. Then, after months and years of diligent practice, they made something big.
We were all created for greatness so stop being average. Push yourself to become the greatest you, you can be.