Mistakes is a common thing in life. As we expect too much from trading this is not a mistake. We like to say is a greed which is very bad habit in trading because not to sell or buy in time is not a mistake.
We should make some target for profit then we will safe from loss as well as from greed then the mistake words we cannot say in trading because how many people are getting profit from these tradings.
One thing that all of us who trade in cryptocurrencies should keep in mind is to control our emotions. If we cannot control our emotions then we will never be successful in trading.
So we all should trade realistically rather than trading with emotions or we may end up in losses.
But there are other things we need to keep in mind that if we trade in any token, we don't expect extra profit from that token and we don't expect to get rich overnight from this token. I said this because suppose you take a coin entry and the price of that coin suddenly drops, then without being emotional, we have to review the condition of the token and then decide.
There are also many traders who trade a coin and watch the price of that coin over and over again. I think they should place a specific target sell order instead of checking the coin price repeatedly. Then maybe his mind will be very calm