Fear is false evidence appearing real, was the definition I learnt of the word fear. But its not so at all times and there is way around our fear. Our fear helps us to know or it serves as an alarm to get us alert of the impending danger or of something that needs our attention in which we can not afford to fail because it has the capacity to inflict pain, damage on our body, mind and soul. Fear helps to achieve certain things and at the same time it can keep us from doing some things, we might have succeeded if we had attempted. Though it is good to be aware and calculative of the step(s) you want to take, sometimes the calculation help us to factor in the fear factor and calculate if we can be successful or not.
At the point where fear hinders one from achieving a good plan; fear of what people will say or the fear of failure. When fear is given too much attention, it diminishes the intuitive capacity to think right or being able to think of alternative means of achieving same objective.
Beware of fear, and ensure its not the reason you refuse to put that great idea into action.