Don't worry about failing. It is better to move forward and fail then to stay where you are. When you stay where you are it is internally brewing misery within you. Even if you do fail, you will feel better knowing that you tried even if you do not succeed at first. I have heard it quoted many times that "Motion creates Emotion." I do not however, believe this to work both ways. I have saw many people with presumptuous emotions stop before they start. Sometimes our emotions keep us from moving. Fear and discouragement are two of the leading emotions that keep us from moving into action. I have encountered many people with a desperate need to initiate action, but instead they just stand there overwhelmed and paralyzed. People that don't get results (negative or positive) are not doing anything differently. They take the same actions (or no action) expecting a different result. Albert Einstein defined this is insanity.
Sometimes the search and the journey is the most exciting part. There is something inside of us all that gets excited when we don't know exactly what to expect. David Viscott said, "To fail is a natural consequence of trying, to succeed takes time and prolonged effort in the face of unfriendly odds. To think it will be any other way no matter what you do, is to invite yourself to be hurt and to limit your enthusiasm for trying." Even when what you expected to happen does not happen at first, do not lose hope. Do not let one simple outcome that was not desirable hinder your efforts towards achieving your dreams.