I'm happy despite my challenging schedule: Shah Rukh Khan

Superstar Shah Rukh Khan, who is shooting three films back-to-back, says he is at peace despite the grueling shoots and earlier injury on the sets.[caption id="attachment_2082119" align="alignleft" width="380"] Shah Rukh Khan. PTI[/caption]The 49-year-old actor just wrapped up the shooting of Fan, which is being directed by Band Baaja Baarat helmer Maneesh Sharma. The teaser of his second film Raees, directed by Rahul Dholakia, is out while he is also busy working on Rohit Shetty's Dilwale.SRK tweeted quoting a song from the British boyband:However, the injury, which he is referring to in his tweet, is not a new one, sources close to the actor said.SRK underwent a surgery on his left knee in May this year. He had also tweeted in March about an injury while shooting.PTI