I prefer strategy:
#1 Realize that you don't actually lose anything until you actually sell at a loss.  So you go outside, ride a bike, read a book, resist the urge to check coinmarketcap and just hodl.
#4 Buy more into the coin you are losing money on while the price is low to reduce your overall cost per coin/token.  Thus making it easier to make back what you lost.
because this is one of my experiences in investing.