Shah Rukh Khan, who recently stated that he can't do multiple projects simultaneously, feels that to bring professionalism in the industry it is imperative for actors, filmmakers and technicians to do only one film at a time. At a recent event when SRK was asked why he is not doing more films, he said, ''I'm trying very hard to finish one film in a year, I only reach around 11:00 on the sets so everyone gets late because of me (laughs). It is just impossible to do multiple projects simultaneously now, as these days mashallah our films have become so big, we are professionals working together and we have to do so much of hard work that to do four films at a time is practically not possible unless people start shooting films in five days or giving me a five day role. But I try my best, I keep on working round the clock hoping to make more films.'' ''I really want to do a lot of different kind of films, make everyone happy but we need that professionalism to come into our industry and for that I feel actors, producers, directors and technicians should do one film at a time. It will make our film industry a much better place and internationally also we will gain a lot more if we just complete one film, take a little break and then move on to the next character, the next film with the next director. This system of doing four-five films at a time has become old now,'' he further added. Khan will be next seen in Farah Khan's Happy New Year.