"There's always an element of fear that you need to work a lot until people get sick and tired of you or finally figure out that you're a fraud after all!"

In this quote, Ben Stiller is expressing his worry of being exposed as a fraud or being declined by others. He thinks that in order to keep success and popularity, one must constantly strive and impress others. Nevertheless, there is always a sticking around worry that eventually people will translucent the exterior and realize that he is not as talented or genuine as they believed. This fear is common amongst those in the public eye, as they are continuously under analysis and pressure to keep their image. Stiller's words highlight the vulnerability and insecurity that can come with fame and success.