Amitabh is alcoholic and an egoistic person in Shamitabh

The 72-year-old actor said the way a sportsman's play gets restricted after a certain age, an actor's work also gets limited due to the physical changes that come with age. "Like sportsmen don't play too much after a certain age as they are physically weak after a while, similarly when actors get old, their face changes. There comes a time when an actor does not fit certain characters and films."If that happens one has to stop working. There will be new young people and audience. I feel my time has gone now. I am at the back now. In every 5 or 10 year there will be a new superstar and you have to bow down in front of them," Bachchan said in an interview here.