He rues how celebrities have to carry a smile on their face even in the worst times.u00a0"Celebrity interest is not just an Indian phenomenon, it is worldwide too. If you are celebrity, this is the cross you shall perforce have to carry with a smile.u00a0Do no wrong and you shall be safe, but be prepared for the worst even when a small wrong has been done," Amitabh wrote on his blog bigb.bigadda.com.