In 2017 when bullrun took over crypto space and many altcoins joined later some people still keep holding thinking that their altcoins will keep surging and surging, little did they know that bull season always have short life span when comparing to bear season, bear season can stay for years but bull season is just in months, so why are you holding when you should be selling?
Remember that some bought bitcoin at 20k and they have no choice but to hold till today, imagine all this year's waiting just to get back to where you once are. Bitcoin is over 18k now, good for them cos they are near recovery since 2017.
Know when to get in and know when to get out, don't be a greedy bastard.
Surprisingly, BTC just hit its new ATH at almost 40k. ETH hit its new ATH at 1.4k. Its never too late to invest in cryptocurrency. There are a lot of people are still in doubt of it. They make it more pleasing for us crypto users to have it at a smaller price. Volume will rise sooner or later. Gotta have em.