All of us have good days and bad days, and for day trading it turns out ugly when you don't have lucky days with your holdings. Sometimes you need to understand the environment of trading, that's somewhat risky while you bought your coins at higher price. You can't expect it to grow suddenly and you'll have to wait for several days to expect greater results for the price to increase and take your profit gains.
The philosophy that you express is true, because luck does not come every day. Being aware of such risks makes daily trading more careful and always takes policy based on logic. Not only emotional.
For me, those who were initially unemployed and took part in bitcoin trading every day, made this a profession and had to enjoy various conditions that occurred in the crypto market, there was time to profit but at other times it could be lost. That cycle must occur in trade.