I often lose my temper when altcoins drop sharply.
And in general, I sell altscoin at the bottom
Wait and see ( patience ) to find the right time to sell, that's all and just like that. I believe you not calculate ( manage ) your fund wisely. Besides that, you still don't understand real market has their own answer ( risk ). If you don't have those thing, " panic " and " loss " will become your friend. Even alt has low price, I never worry because I still have asset to cover it. Patience and good luck to you.