what’s your strategy for selling? do you sell just because you’re in profit or you hold forever?

so I missed the sale point in the last crash when everything went down 50%. and now that everything is recovered and went back to that sweet spot i'm wondering when is a good time to sell some percentage of my holdings.

what strategy do you guys use to sell. not talking about traders, but people who hold long term but sell high to have money to buy dips

I'm personally thinking to sell some parts now but also seems too early as we just reached the last levels so SomE AnaLySisTs say it's gonna go up n up

what's your plan?