Well a very positive and inspiring thought, but very defficult to follow. We can do our best from inside oly when we are pure from inside, without comparing us with others,without feeling soorow or joy for achieving or not achieving targets.
This can be posible when you surrender totally to some one in whome you have very strong believe. Like here in India, we believe that LORD KRISHNA has send evry one ne specific duty and one should perform his/ her duty withut wishing to gain or loose by the result.
This way you can give your best and will not look around you for comparision, which gives you joy, sorrow, fame,ego.
Yes, as long as you believe to yourself, and always face to possitive ways. Just believe and it will happen. You can get outta from fearness by fighting it with your strong faith to God, and believe to yourself that you are strong, you have pure heart, and think that no way the fear to occupied your heart forever! cheers for peace!!!! :)