You're just constantly battling this thing that is telling you, 'I don't think I can do it.' I think we all have it. When you're fresh and alert, you can easily put those doubts down. But when you're tired, they easily come up to the surface.
I guess the producers saw me and knew I was literate and I always tried to be alert and it's funny because you have to have a sharpness to do those shows, especially some of the ones I did in later years.
But a lot of writers - and I'm one of them - do tend to feel dissatisfied. It makes you a little hard to live with, but it's a goad and does keep you alert and restless.