The fun or frustrations about buying shares is if you get it right , you make profits. But it also works the opposite ways. The longer you hold your losses the more emotional you become, blaming yourself for the bad decision (impatience, wrong capital allocation, too greedy, not sufficient research, etc).
One thing we need to know as investors is stocks do not move in a straight line up. It has its ups and downs. In the short term, the market is irrational and with it may not have anything to do with the company fundamentals. Thus, it is deemed as an opportunity to those who knows what they are doing and equally frustrates those who merely follow headlines or influencers' leads.
Invest with a long time horizon and choose your stocks wisely.