You said sell now or you WILL regret it? Then it could also be Sell now and you will regret it.
I'm not saying that bitcoin will achieved a new ATH this time, but I do think that it can, or maybe it can reach 12k again, Last time, it sits a lot of weeks in 10-11k and went up later on. I might use that as another hope for holding some of it.
I'm not holding it for a long time though, if some signs says that it might fall later on, then I'll be considering selling it before that happens.
I agree there is no point on selling our bitcoin now especially if your aim is on the long term and what bitcoin can achieve by then, however I think this advice does in fact apply for all of those that have been investing in those DeFi coins for months and that are getting greedy and think this can last for long, bubbles by definition are short lived and I think we are slowly seeing the hype for DeFi coins to go down.
Now if this growth was based on what those coins have already achieved then the drop in the price could be mild but since everything about that market is about its potential then it is clear that a crash is coming to many of those coins during the next months.