This acronym can have more than one meaning, or even an opposite meaning.

For example, Have Fun Staying Poor can be applied to oneself in a kind of humility mantra. In other words, once you've adopted the bitcoin standard, you have an economic incentive to learn to have fun with activities that don't cost much, because in a few halvings, you'll be biting your fingers at having spent so much on expensive and futile things.

I know that HFSP is never used in this way, but I like to see it as a reminder to reduce my time preference.