Think ahead: Buying and holding isn’t right for every asset, but during a market downturn, consider your long-term goals. Did you buy with the intention of selling many years in the future? If so, it’s probably ok to stop refreshing that tab and take a deep breath.
That's right. Not all assets will rise like BTC, there are numerous coins in the coinmarketcap list where the price still is what it is 3 years ago but the satoshis is less than what it is 3 years ago which is also a good reason to not hold instead if you are just refreshing that tab every time anyway.
Look into dollar-cost averaging:Dollar-cost averaging is a popular strategy for reducing the sting of volatility and taking emotions out of trading — it involves buying a smaller amount of crypto every week or month no matter what the market is doing.
DCA works if the investor buys at every dip and then sells at the ATH and then invests again.