Many people are inclined to do one job for the whole of their lives. In their opinions, people who change their jobs frequently are unwise. They believe that the only way to succeed is to stick to one job, for constant practice in a professional field helps make an expert. But there are many other people who think otherwise. They argue that change means progress. If you are not satisfied 'with your present job, you certainly have the right to change it for a more challenging and better paid one. Every change is a step to further success. These convictions may be the reason why they change their jobs so often. In my opinion, it is reasonable to change your job if you have a better opportunity. But once you have found a position where you can fully display your ability, it is advisable to settle down to it and put all your efforts into it.