I often lose my temper when altcoins drop sharply.
And in general, I sell altscoin at the bottom
Some time I feel the same way but I will not sell as a result of the panic on till the decline trends continue to the level that I could no longer stand it or bear the lost. But there are some time when altcoins turn red signifying buying order because there's a tendency for the market to return to positive direction which I will make profit at the end.And in general, I sell altscoin at the bottom