Just be patient. Time will tell if the value of cryptocurrency will rise again. Some loses because they sell their cryptos at a low value compare its cost because they were panic when they see their cryptos drops down.
Psychological attacks make people panic and like their thoughts are disrupted, so decisions are not appropriate. for that, keep calm and hold the assets that they have, so that conditions are not getting worse
I always say the impatient and emotional people cannot survive in cryptocurrency. For crypto investment patience and courage is mandatory so that you can wait for long and when you lose your money due to fall in the price, you bear that situation easily and cool to hold your coins for long till the price grow again. Panic is something that leads to disappointment.