It depends. The "hodl" mindset is better for those who usually panic sell when the markets go crazy low and drop like where we are right now. But when actively trading for profits though? You get 1.5x - 2x profit? Sell and take profits! No need to get too greedy when doing trading, hoping that you're going to get more profit. Being too greedy usually ends bad, most of the time.
day trading can also be bad practice if you don't know charting and fundamentals. I am not against hodling but mindless hodling no matter what usually end in bad terms.