I haven't had yet a set of rules, but goals I have. And in all my tradings I had a specific number to sell at, but never had the patience. I think though that I will put to the test your to day rule when selling my cryptos.
It will just take some time for the market to recover. I will not sell though at the first boom. If my goals will be accomplished by the end of summer I will sell then, but if not I will wait for winter. Unfortunately that's when I got in with some of my investments and I know from my own experience that the hype is pretty big then and another think that I learned is to sell whenever the crowd gets to overconfident and buy where is doubt.