The late great David Nivan, in his autobiography, intimated that he felt a fraud as an actor. He played himself but used other people’s words.
I'm no writer...just a hobbyist writer. I lack the imagination for a quality plot... hence reading sites to my interests. I once started a film script about
free energy (detective/ thriller type thing). Something that I, as a wishful pragmatist, feel passionate about. Needless to say I didn't finish it. It genuinely was rubbish