I think panic selling is the worst one. Trading shouldn't be about psychological. Because others act according to psychological and you should evaluate the others in order to do nice trades. But if you do panic sell, you will become the normal trader and you can't make money with doing similar things with others. So, do different things than others and make no panic sell.
If we do this all the time, to panic all the time the price is declining, then how can we be able to take profit on it, we will just lose our fund and investment, so better not to do investment if you cannot control your emotion and you are in doubt in everything that you are doing, it is fine to do investing, but be wise with your decision, think well.
If trading is only about psychology then you will panic all the time, because prices fluctuate up and down very quickly, every minute, every day, and make you panic. Trading requires you not to use your emotions and feelings when analyzing and trading because sometimes the market will make you frustrated if you overexert your emotions. You must be smart to manage your emotions, be wiser in making choices, and start to be more patient
In any case, the trader experiences certain emotions because of his results, whether it is victory or defeat. But a novice who has lost a lot of money rather than an experienced trader will experience panic. After all, a professional always observes sharp market fluctuations and immediately after bad news or negative changes in the cryptocurrency market, takes certain actions to minimize his losses. Yes, of course the trader is worried, but this is no longer a panic, just a professional excitement.