There are two basic things that need to be implemented when the market suddenly falls like yesterday to make a profit. First, the attitude must remain calm by thinking that it will recover. Second, take the opportunity to buy as many coins as possible, such as top 10 coins.
1. No one would never ever able to avoid on not to have emotion or reaction when you do see a fall specially if you do see that your portfolio is on negative.You do normally freak out which is unavoidable.
Thing here is that you do know on how to handle up your emotion.
2. Not all would be having that sufficient money for you to invest on directly with 10 top ranking coins in the market, having 1 would be enough specially bitcoin and we know on how volatility works.
3. Buy low Sell high is basic but there would be things needed for you to do so.
This is true, if you see your coins falling and no indication of slowing down, you will definitely panic. I bet, everyone is. But in case of bitcoin, for me, it is different. Even if I see that bitcoin is going down, I know in my heart, it will soon go up again. Though I have no concrete idea when but with our experience, bitcoin is one of the solid coin that you know have the ability to increase despite all odds.