What is Fear? Fear is an emotional state that's evoked by threat of danger. And it's usually accompanied by physiological changes such as increased heart rate, as well as behavioural changes such as avoidance of fear-producing objects or situations. A certain amount of fear is necessary for our own good. That's healthy fear, as I'd like to call it. However, when it becomes irrational, it's no longer healthy and it could do us harm instead.  What is Irrational Fear?   Irrational fear is fear that isn't  situationally appropriate. In other words, it's out of proportion to the actual threat. And it can be a symptom of some mental health conditions , such as PTSD and panic disorder. According to the author of Conquering Fear , an overdose of fear can keep us perpetually tense, emotionally closed and paralysed to the point of inaction.   (Pg 24)  Do we want any of these? Obviously no, right? Therefore, it's important that we recognise signs of fear