Now a days we sometimes seeing the price of Bitcoin falling along with others also falling.
At that time if I have Bitcoin then what should I do ?
Should I sell or hold?
I suggest to hold than sell it especially now that the price of it was falling. You will not get profit if you will sell, you will just lose what you have invested on it. The best strategy in this kind of situation was to buy more. Because it was in a cheaper price and keep holding it until the price of it recover and pump again.