Diseases are part of life , but no one likes them , moreover we are afraid of diseases , but there are people who unnecessarily worry about problems related to health . some times they behave in funny way suspecting anything and everything , fearing that they are going to die soon . it is none other than fear .fear is one of the greatest enemies which affects our joy and peace. Our worries and fears about the future .we must overcome our fears to enjoy our life .fear is a psychological event. Now we have to discuss with the causes of fears. These are anxiety , nervousness, worry,phobia. In our day to day life we are anxious about examination results, child’s admissions, jobs, etc. nervousness generated as a result of self inadequacy. It is due the lack of self confidence .you may feel nervous while facing an interview board. When the board asked to speech then you feel nervous. Worry is a syndrome which hangs all the time in one’s mind. The worrier person always thinks about the feared object .phobias are unreasonable fears , which a normal person will not fear but a phobic person would do.