What's the utility of Myers-Briggs, Big Five, astrology, etc? What's the actionable advice? Do they help me make better predictions? -- After my occult phase

What's the utility of Myers-Briggs, Big Five, astrology, etc? What's the actionable advice? Do they help me make better predictions? -- After my occult phase (middle school), I had a longer skeptic phase. What kids today call "rationalist". Then someone at a party told me "Astrology isn't about truth. It's just a way for people to talk about the human condition." Huh. That kinda makes sense. So I stopped LARPing as Michael Shermer. (More recently I tried the "belief as attire" stuff for a while. Now I think people are all about identity and wanting to belong to a group.) Anyway. I'm fine with Myers-Briggs. It's no less true than any of the other stupid stuff we tell ourselves about our selves.