One "rule" I have tried to follow lately is only print negatives you REALLY, REALLY want to print. Don't be diverted by the "should dos", "must dos", "he/she'll like this ones", "this shows how smart I ams" etc etc. Fun and joy and satisfaction is slaving over a print you really love. Slaving over anything else is ultimately not very satisfying and steals time from the others. You will always(eventually) have hundreds or thousands of negs that will never see the light of an enlarger so always start with the "next favourite" one that inspires you.
Good work JB.