This is the base for positive feeling. Fear is the negative aspect of freedom. Fear is the feeling of limitation and so a sign of weakness. To have a positive attitude one should be free from fear. How does one get rid of fear.
Fear is because of ignorance or lack of understanding.
We fear a certain object until we know about it. Once we know about it, we have no fear. Suppose one rainy night when you take a walk in the woods, and find a long object lying across on your way. You would fear whether it is a snake. With the fear you would not proceed further and may even turn back and go the way you came.