Some don't know exactly when they can consider the price to be low and when they can say it's high; they enter the market with the wrong timing, and when the bitcoin price is retracting and it's in correction mode, they see it as losing money instead of waiting patiently or making good use of that opportunity to use a smaller amount to buy a higher volume; they rush to sell in order to reduce the amount that could be lost, forgetting the fact that as long as you hold, there is always a high chance of getting that dropped portfolio with extra profit attached to it.