When you posted this, bitcoin was at $26500. One of the best way to overcome the panic is to DCA. People may not necessary buy all the bitcoin they want to buy at once, they can continue to DCA weekly.
The current market situation is the exact reason you should DCA. If you have already developed the habit of DCA-ing before this termed opportunity, you will not so much be excited by this dump, you already have a strategy to accumulate bitcoin and will continue consistently.
In some other case, someone who just made a huge investment in bitcoins will not be happy because of this huge dump. They will be feeling like they made the wrong choice to even consider investing in bitcoins without knowing that they have chosen a wrong strategy to invest with and a wrong time as well. If you also had been DCA-ing, you will not be affected by this dump emotionally because you did not just dump money into bitcoins before the price fall. DCA-ing gives you a steady advantage and opportunity.