I find it more easier to hold coins and tokens if their worth isn't much, this means that we find it hard to hold simply because we invested too much money that we aren't ready to lose, here are two examples to back my point.
1. I always like the idea of " not selling everything ", assuming I have 1000 tokens I always sell 90% even when they are at ATH, leaving very few coins and tokens behind do have it's time, there will come a time where they add more value, remember not every ATH is the last ATH.
IM always using this kind of strategy to avoid another bullish trend that can make the price of token to go up even higher than what i have sold. i do believe if this is the best strategy to take the advantage from both. I meant you can earn from selling your token at ath and you can keep some to prevent unpredicted story if the price will be going up even further than before.
2. little coins that earned through airdops in 2017 they are not even close to 1$ and in January 2022 two of them did wonders, name is Avinoc and whackd token, I made 80$ from avinoc and 500$ from whackd, my main point here is if those coins have huge value at the time I would have sold them right? I took my eye off them because they have too low value...
This totally depend on how good the fundamental of token. if your old tokens got pumped so hard right now and just sold them coz they will worth nothing in the future. im sure that if it's just another short term hype but if that has good fundamental and just keep it. The only thing that consider whether you must have sold them all or not depend on the fundamental of project.