...having a successful joke writing and idea session.
*Comedy is art and not scientific. There are no specific rules.
Stand up is a license to break rules, however keep in mind the goal of a joke is to get laughs.
First! bring to the table some genuinely good ideas or topics.
(Remember that every idea is not necessarily a good idea. Pick the ideas that you are really passionate about. excite you and give you lots of thinking juice)
be willing to have fun exploring the idea or topic by breaking it down into fragments (tangent lists) all the while taking short notes on; images, words, phrases etc that come to mind while doing so.