He is one of India's best known actors. But a modest Amitabh Bachchan says he only knows how to "prepare, perform and push off" and is not capable of donning the director's hat!

"I am often asked when I would direct a film and my standard answer to that has always been that I can barely act, where am I going to get the acumen to direct, " Amitabh posted on his blog.

"To me it (direction) has been an enormous task that can only be fulfilled by those that have passion and desire to want to tell a story. I guess sometime or the other we have all wanted to do that - to narrate a credible story. But to convert it into film is indeed another matter, " he added.

The 67-year-old says he is content with his acting career.

"I am most happy when I do not have to worry about the aspects of film making (other) than with those connected to a performance. Prepare, perform, and push off! It may sound too selfish a thought, but really what else could I ever contribute to it, " he posted.

Amitabh feels that though it's a major task to direct a film, directors are not often given their due credit.

"Directing a film is an enormous task. Every aspect of it has to be understood and envisioned before any serious claim can be made on this. Which is why I think the respect and admiration and acclaim that should have rightfully been the director's is sometimes destroyed by a complete misunderstanding of what his or her contribution, in the field of direction is, " he added.

The actor, who turned film producer in 1996, will be seen next in Ram Gopal Varma's "Rann" and in Leena Yadav's "Teen Patti".