Fear is that really icky feeling caused by the belief that something or someone will hurt us. Some fears are justified, like the possibility of getting badly burned if we choose to run into a burning building. People have been known to die if they run into burning buildings. Not running into burning buildings is a good way not to get badly burned and/or die. And some fears aren’t justified, like the possibility of what might happen if we choose to do something new that’s not life-threatening and still feels scary.