Actually people's learn from mistake. Those mistake I did began, I am realizing now. That's why I want to share it. Perhaps everyone will not agree with me. Every traders have few favorite coins. It's normal fact, but don't love too much any coin it's my logic.
I don't want to mention but I have lost many btc just one coin. Just think it will go more up and didn't sold. In a result price dropped 4X. So I want to say don't love any coin, just sale when you are in profit and go another coin or wait for drop price again and buy it. It's very difficult to recover once drop an Altcoin. One more thing, don't invest your all fund on single coin. It will loss more, who know it will up or drop.
I also faced the reality sevaral time in my trading life. Specially want to talk about from 2018 first to Now is the very bad time for me And I lost huge amount by blind trust to crypto. So at this point i want to tell to beginers in crypto that don't believe in any crypto too much and don't invest all off your money in one coin.And try to stop loss sell.