I often lose my temper when altcoins drop sharply.
And in general, I sell altscoin at the bottom
When the market are full of red be happy especially in bitcoins because it is the right time to buy bitcoins do not panic that much. We all know that their prices always rise back up especially bitcoins and ethereum because that two is the one that I always monitoring the price. For me it is a great time to buy and hold because i am sure that after a month my momey will surely grow and will have an easy income. It is pretty risky though