Popular Bollywood movie star Hrithik Roshan misses his 3-month-old son so much while filming away from India that he's planning to bring him on location next time. Roshan is due back in Bombay later this month after weeks away filming the action movie ``Dhoom2'' in Swakopmund, Namibia and Durban, South Africa. ``He (Rayhaan) is undoubtedly the most important thing in my life,'' Roshan told the Mumbai Mirror newspaper, commenting on his son. ``I have come to understand that fatherhood is probably the best thing that has happened to me,'' he said. ``A smile from Rayhaan every morning gives me energy to work hard.'' Roshan plays a smooth-talking thief in ``Dhoom2,'' which also stars Abhishek Bachchan and Aishwarya Rai and Bipasha Basu. His recent release ``Krrish,'' where he plays a superhero who glides over water and leaps over buildings has been a huge hit across the country. Roshan will begin shooting a historical film ``Akbar Jodha'' opposite Bollywood beauty Rai in September.