Fear is self centered, think about it. What is the act of being fearful? There are certain fears that are OK to have such as, If I drive my car at 105 mph and close my eyes, some one could get hurt. Or if I jump out an air plane with NO parachute, something bad could happen. These are example of good fears, fears that keep you alive.
The act of being fearful for the most part though is being concerned with the thoughts of what others think about you, or I don't want to do that because it makes me uncomfortable. Examples of these fears would be: I don't want to call that For Sale By Owner, because I might not know what to say. Or I'm not going to ask for a referral from this person, because they might think I'm trying to sale them.
Get over it, stop thinking about your self, and think of others first. Remove your ego and ask yourself this, " Why was I put on this Earth?" What is my purpose in life?
Once you come to the true reason why your hear, and only than will you be able to let go and do the things your born to do. That is to help others, that is the ultimate. Rather it's helping that for sale by owner understand what they need to sale there house, or just opening the door for a complete stranger. Once where able to give with out expecting anything in return, that is when we'll be able to be ego free. So go and hold the door open today for a complete stranger, or even call a past client that you where afraid to, because it's been 2 years since you've talked to them.