yes, I have a big coin stagnate and feel a failure where I have a large number of coins but the price is crash. It is my regret that I did not seek information related to the altcoin and did not monitor the market where the coin was traded.
Even you are updated, sometimes you will be hesitant to sell your large number of coins especially when you are seeing great news about that coin because there's a thing on your mind that tells you that someday it will grow in value.
Seeing some of your coins experiencing a bad market day, you will still hesitate to sell since you are sticking to the idea that it will bounce back. Stand on what you believe and don't hesitate to do some actions against your emotions.
It will grow in value even there is no news. In crypto, holders earn more than traders do in most cases. The price of Polkadot traded below 4$ and now it's above 24$. I do not think there are any traders who didn't book profit or exit from the market around 8$ more than 12$ in the dot. If you are investing in a good project it will grow we just need to avoid our greed and fear.