What I usually do if prices are falling most specially if the coins are very low, I would buy more coins from a much lower price and your total amount of couns would then be divided; the result would be lesser losses. Read or research on google about books or ebooks on trading.
That would be a good idea and would bring you a lot of profit when the coin price goes up. However, that is possible only if you still have enough satoshi to buy more coins at a very low price and just put it on hold it for a long time.