People shouldn't invest if they can't control their feelings, and they shouldn't invest in coins that haven't been thoroughly researched.

One of the basics of trading is studying the coins because you're spending money on a coin because you know it has promise and a lot of future ventures, not because of the hype. If you believe it will turn bullish soon, hodl and wait rather than panic selling because you will lose a lot of money.

2021 has a good result for cryptocurrency, just be patient and wait for the huge outcome.