Yes i agree with you, Hold is the best thing to do if you want to get your profit. You don't lose your bitcoin or altcoin unless you sell for the lowest price for your actual price. That's why much better to hold after you get your profit what you want and sell it.
At the time when the prices are falling down, then there is only one thing which can help you from not suffering any kind of loss and that is remain cool and calm. You need to be patient at that time and hold your bitcoin for as long as you can. There is no point of getting panic and selling your bitcoins at that time. This will do nothing but will result in huge loss. Patience is the only key.
In my opinion, depend on the trend of the market, I will decide to sell my Bitcoin or not. The price of Bitcoin falls down does not mean it is not good time to sell your Bitcoin. Example if it just started to falls down from $6,000 and I have chance to sell it at $5,900. Sell my Bitcoin and buy back it after panic seller dumped its price, I can buy extra Bitcoin with same amount of money instead of hold it.
