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 your token hit a new ATH then you should sell it instantly. because if you hold it more it can dump again it is normal and you will get loss again the you have to hold extra long time for recover that price again. so from my opinion i will tell you sell it instantly.