Indispensable staff are scarce. When an employer finds one, they will do everything in their power to keep them. Do you want to be that one to your employer?
Many people do not care about becoming indispensable. That is why I know many people may not be reading this post. But think about it, when the chips are down and you need to get some weight off the ship to keep it afloat, only the indispensable staff is left aboard. Economies are getting worse and organizations are downsizing. If you want to keep your job, you cannot afford to remain a part of the over 80% of the world’s population who live average lives, make average decisions, put in average efforts and get average results.