Sometimes panic selling can save us too. 
I am not a regular trader but I feels panic selling at the beginning of bear run can save lot of capital than waiting for too long for doing trades.
My addition is don't regret about panic selling if the prices didn't fall after you sold your crypto just move on and reinvest on the right coin.
That is somewhat entertaining.. it feels how difficult to control our self during the bear season and I think that almost everyone also thinking to sell their coins once it falls more. But somehow market won't let us to make a mistakes and it shows some pumps which it enlighten us to be more confident with.I am not a regular trader but I feels panic selling at the beginning of bear run can save lot of capital than waiting for too long for doing trades.
My addition is don't regret about panic selling if the prices didn't fall after you sold your crypto just move on and reinvest on the right coin.