There is a legend which says that there was a mouse who was very afraid of cats. She wished she could become a cat, her wish came true and she turned into a cat.
Then she saw a dog and became afraid again and wished she were a dog. Her wish was granted and she turned into a dog.
Then she saw a lion and she was terrified by his power and strength and wished she could become a lion so that she would not have to be terrified of the lion. Her wish was granted and she became a lion.
Then she saw a man with a gun about to shoot her with his gun. You can imagine what happened next. She wished she could become a human and she did.
But when she was sitting in her house she saw a mouse and she was scared of the mouse. The little mouse frightened her.
To break the cycle of fear turn to Jesus.