Ever ask yourself why you do comedy or are interested in developing it within yourself? It helps to know.
For me questions can be the most powerful thing in the universe. Where would humans be right now without our ability to question things? I believe sometimes I'd be more confident if the Bible started with a question. I don't even know if that makes sense but it does to me...in a twisted sorta philosophical funny way.
Want to begin to write? Ask yourself questions. Especially the question why.