Well, the main thing I can say is that, since you are a short-term trader, trade with a stablecoin paired trades like ETH/USDT. And before going to sleep, be sure to have sold everything into USDT and try your luck again tomorrow when you wake up. That way, you'll be confident enough that your fund won't dump (and won't pump) during your deep sleep.
l think it happens to people who prefer short term investing, that is why you always think about the price of the project which you have invested in and it is making really hard the life, but as you said if we try converting our money to USDT, we can sleep very well, but it is something different about long term investing, you should not take care about that. If you have such a problem, l advise preferring long term investing. On the other hand, you can not sleep cause of thinking about your money.