Volatility, simply put, is about "taking your chips."

It doesn't drop dead on you directly, but first makes you realize unrealized losses, then gives a false sense of recovery, and finally strikes down hard, targeting those who just relaxed.
Most people don't lose to the market itself, but to the emotional torment of these swings.
You think it's random fluctuation? Actually, it's precise "mind washing."
If they don't break your mentality, how can the market take away your cheap chips?