for example, your in darken woods... there are monsters about, scary ones that will capture you and torture you before they eat you. your walking along a path, when your best friend jumps out and says RAAAAA!!! you jump, because at first impression in your thought process you automatically assumed it was a monster that was going to eat you. you couldnt control the jumping, you couldnt control that fear... but once you understood it, it gave you the ability to decide what to do with it. you could either turn around and stab your friend (what you thought was the monster) in the chest with your sword, or you can decide to turn... assess the situation, realize it was your friend and not a monster, and refrain from killing your friend.
you cannot control fear, but you can think rationally, and decide what to do with it.
hope you liked the story, i thought it was pretty cool =D