I'd add one more - if you ever get a good client (freelancing, even when you are full time) keep them happy. A client who doesn't come up with billion changes, pays on time, doesn't micro manage etc is really worth working with, even if the work itself might not be super interesting.
I'd add one more - if you ever get a good client (freelancing, even when you are full time) keep them happy. A client who doesn't come up with billion changes, pays on time, doesn't micro manage etc is really worth working with, even if the work itself might not be super interesting.