Buy the dip, AND HODL. 
If the deep comes, yes is a buy but at the mean time, the price has started going up, now at $10,400. I think this time is going up for the festive rush. Is always a hodl though.
On the topic, the price is still profitable and it is still bullish if you compared it to the price in a couple of two months ago.
Many traders are taking advantage of the current market situation.
If you know how to handle this situation, you will treat this as a good opportunity to get more btc and not complain about the declining price trend.
Sooner or later, I strongly believe that the btc price will go up again.
That is right, short-term or long-term investment, it all depends on the trader.
As long as there is profit on either type, I guess you are already winning in trading.