They way I deal wit it is when I am at a loss, I don't even look for days. Most crashes take a few weeks to recover. Just put it away and live your life. Think of it a sa long term thing.
Just set your buy and sell order then leave it yeah ... You don't need to check the price continuously, it would only make you under pressure , trade like there's nothing to lose , believe me you'll get positive outcome most of the times , once a week or twice a week are a normal thing .
Whenever you buy any coins you should make it to the point that you really do your research, so after you place your entry you can leave it there and wait for your target value to be hit, this type of short-mid trading strategy are always good for those who knows the drill, its hard to make money and its really stressful when it comes to trading, so make sure that you have strong foundations and you know how to play with your hold coins, make sure to do your homework to protect your investment.