If you are looking for a way to overcome fear that is holding you back from a maxed outperformance, then there are a lot of resources out there that can help. Here are a few good articles. You will see some commonalties between them.

Sure-fire Ways to Overcome Fear and Anxiety Today:

If you find yourself becoming overly anxious, use the following steps to help you calm down and start to regain control.
http://www.uncommonhelp.me/articles/overcome-fear-and-anxiety/

3 Ways to Overcome Fear Immediately

If there is one thing that holds millions of people back each day from growing as an individual, achieving high levels of success and becoming the best version of themselves, fear is definitely at the top of the list.
http://www.artofliving.org/meditation/meditation-for-you/understanding-fear

Ten ways to fight your fears

Whatever it is that scares you, here are 10 ways to help you cope with your day-to-day fears and anxieties.
http://www.nhs.uk/Conditions/stress-anxiety-depression/Pages/overcoming-fears.aspx

Getting through fear is a skill that anyone can learn. The problem is that most people cling to their fears, because it’s part of who they are. If you aren’t ready to face your fears, you probably won’t. And there’s nothing wrong in that. Everything happens in its own time.
http://www.wakeupcloud.com/overcoming-fear/

Dominate your fear