This story is very common in the industry and it has happened to a lot of people. When i joined the industry, one of the things i learnt early is that altcoins are short term investments, so there is really no reason to hold them for too long, or else you would end up regretting it and so many people learnt the hard way.
It would be better if you could provide a solution to that regret... memecoin is an asset with a very crazy fluctuation... do a sell trade at a certain price if it keeps you in a profitable position, then, be grateful... and if you see another ATH after you sell it, then never think you are a mystic who can predict it...
Actually, the regrets that I read too much are because of their greed,,,, regretting not holding longer, still refers to greed...Rather than regretting it, it's better to forget it and do your best next time.