The advice I gave myself in these 2 weeks is that If any of my coin investment is going low in price, I just need to hold and wait for it to come back at the profit level.
Depending on what kind of coins you hold,
If you hold shitcoin then the price will continue to fall and it will be very difficult to return, the worst possibility is that the project will die and eventually become a scam,
If you are holding a major coin, then holding is the right decision and waiting for the price to rise again and reach a new ATH.
Major coins I mean are coins that are ranked in the top 20 of market cap in Coingecko or CMC.