After 16 years of surviving the Bollywood grind grinding with more hits than misses, actress Katrina Kaif, says one needs to have nerves of steel to be in the glitzy world of Hindi cinema.

"It's not always easy. You need to have nerves of steel to be in the film industry. It's an unpredictable place and no one can guarantee success. I believe in not taking success to your head, or failure to your heart," Katrina told IANS.