...you learn to prioritize your obligations.
I just had to give up a cool theatre job that would probably be useful for contacts in the future so I could help my much-loved cheese shop boss out of a tight spot.
Working catering gigs is kind of like being on a running crew, isn't it? I have to be invisible, have to wear black, don comfortable shoes, get to be surly behind the scenes... Yup. Basically the same thing.