They often say, "What makes you think you can do that?” Or “If it's such a good idea, how come someone else hasn't done it?”  Or  "That will never work. You don't know what you're talking about.” These words of doubt often get so loud that we fail to act. A horrible feeling builds in our stomach. Sometimes we can't sleep. We fail to move forward. So we stay with what is safe and opportunities pass us by. We watch life passing by as we sit immobilized with a cold knot in our body. We have all felt this at one time in our lives, sometimes more than others.
Robert Kiyosaki