Assuming I've made up my mind to hold on to a token for many years but after a year this token hit a new ATH what should I do as a newbie? Sell or not sell?
If you already have an altcoin that has improved and have found a new Ath then it is very good and the right choice is to sell it immediately. and I'm sure those altcoins will come back down in time. and if you still have faith in the altcoin then you can buy it back. so you can benefit from 2x trades. because many altcoins that have reached new ATH will fall back down and if the altcoins are good they will definitely rise again until they find new ATH again in the future. example bitcoin every year has a new ATH.
You need to have a good set of plan before taking your decision, investing with good crypto assets is, really
profitable. As long as you can adjust with each market movement, you can grow your wallet in terms of buying low and selling high
then repeat the setup and learn more to enhance your chances to gain more success.
Not an easy task, but if you are really keen, there's always a good chance for you to succeed. The market is volatile and choosing
between short and long holdings is always your own decision making.