The market for cryptocurrencies is very volatile; Everything can go down in price in a matter of minutes, and in the same way increase in price. That is why when buying and selling cryptocurrencies you have to leave feelings and emotions aside. Since if you are a person who panics to see your favorite currency lower price you can sell to lost.
I have seen my portfolio download hundreds of thousands of dollars in a matter of hours, but today I am used to it and I know that the market will always do the same thing, again and again. What I always recommend is:
1. Never invest money which bill to need within weeks or months since we do not know when we are going to enter a bear market. Never invest borrowed money.
2. Never sell to losses no matter how bad the situation looks.
3. Always do your own research on the currency in which you intend to invest.