Work on substantial goals.

Are the goals I set high enough? That's a question I ask myself. When you set goals that are far lower then you are able to achieve, you go for mediocrity.

And, most of the time, when it is to late you realize it. The starting point of mediocre goals is most of the time fear for failure. But the truth is when you have a proper goal, failure will bring you closer. It teaches you lessons about stuff that does not work. 

Failure also lets you move on. And mediocrity holds you back from reaching your full potential.

Suppose you experience yourself succeeding, but you still feel incomplete. Then it is time to reevaluate your goals.

Pursue a goal so significant that even if you fail, you are better off for having tried.