It's only partially true that you do comedy just for you. No question you should always write and perform what you think is funny... however, it is my understanding the art form itself if done successfully (inducing a laugh) is to be translated for an audience's acceptance.
Feelings outweigh thoughts.
Real creative creating, it should be feelings and imagery FIRST, writing thoughts after. Funny creative writing should spill out as if you're taking dictation, you need passion and emotions to drive that spilling.