You have to have something worth saying and then the ability to say it- writing's a double skill, really.
“There was a gap of seven years between the first and second Dracula movies. In the second one as everybody knows, I didn't speak, because I said I couldn't say the lines.”
“I praise the Lord here today. I know that all my talent and all my ability comes from him, and without him I'm nothing and I thank him for his great blessing.”