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.
Well, while DCAing is indeed a smart decision, it still does not really address the emotional panic that somebody goes through during such turbulent downward price movements. We are, each and everyone one of us, after all, only human. I think the best way to overcome such negative and counterproductive feelings of panic is to step away from the charts and distract yourself with something else.