"I think you have to actually challenge yourself and come up with something time and again, every hour on the set that you can utilise his potential...which I think none of us have yet been able to do and it's a challenge for all of us," Siddharth said. IFFI 2021: Hrithik Roshan Receives Praises From Director Siddharth Anand at the Festival’s 52nd Edition in Goa.