Hollywood star SHIA LaBEOUF credits KEANU REEVES and WILL SMITH with teaching him how to deal with the high-pressure workload which comes with spearheading a movie. LaBeouf has heavily criticised his performances alongside Smith and Reeves - in 2004's I, Robot and 2005's Constantine, respectively - and admits he made a huge mistake signing up for the supporting roles. However, LaBeouf has no regrets - because his A-list co-stars have helped to prepare him for life as the "number one" on set. He tells Britain's Empire magazine, "I'm not that proud of those performances, by any means. When I look back on things I've done, those seem like mistakes. But they were correct choices at the time. "I got to watch Will Smith and Keanu Reeves carry movies on their backs. It was a huge learning curve, on discovering how to deal with being that guy on set. There's a lot more that comes with being number one on the call-sheet than promoting the film and acting in it. "I studied how those guys handled the crew, how they turned up on set, the way they never got sick."