There will come a time where not selling will be your greatest regret in this space, everyone seem brainwashed right now that crypto bulls will be here everytime but little do they know that crypto space works seasonally, bears and bulls will forever be here
Regret comes only after not selling altcoins of a not popular projects, or bounty rewards. In my experience, almost everything that drops price, with time recovers and gained even more.
I will never regret how I have bought waves for $3, became its holder for 1.5 years and was happy to sell last summer when the price was around $4. And look at waves price now.
And I have numerous cases when bounty tokens became worthless after holding or buying altcoins that turned to be just a short-time hype.
however, the benefits will come to those who are patient and choose the right thing. to be honest, I did that too. Didn't panic when Ethereum prices fell a few years ago, it's just that I sold it when the price wasn't as high as it is today. well, at least I got a pretty big profit. however, in these circumstances, it's best to hold assets, or accumulate as much as possible, because I'm pretty sure the price of a good coin will definitely go up.