Many people regret that when passing ATH, they did not have time to sell or buy after the correction occurred, ATH that occurred not only at the price that occurred at that time but ATH will occur not as we thought most people just focus Every new ATH wants to take advantage of the opportunity ,but I only sell half the coins or tokens that I hold then I sell when the next ATH occurs again and add some top altcoins to the portfolio to prepare for the next bull run to occur.
This is the reason why every trader or investor should set a target price when to sell or when to buy because we can't really predict if that price is already its last ATH, or there is waiting more ahead. This is to avoid missing chances, and regretting in the end. Although the market won't get tired on giving us lot of opportunities, but its still a big difference if we are able to do the right thing once a new ATH appears, or whenever we see a healthy correction.