What gives Amitabh Bachchan nightmare on the first day of shoot?

In his recent Instagram post, Amitabh Bachchan expressed his nervousness about the first few days of shoot. He mentioned how he feels like running away and hiding somewhere. It is good to see an actor like him, who is known for the portrayal of robust characters, expressing his true feelings about such situations. Fans are always eager to know if celebs experience similar feelings as the commoners. When such worshipped actors share their personal experiences with everyone, fans find them to be extremely relatable. Which Bollywood actor is the most relatable?