We should trust our experience in trading even though the situations got worst, and I don't think panic selling is the solution. What will happen to your future profit if you sell it all due to you're panicked? That's why we should stay stronger and keep the faith burning so we could stand against negative speculators.
That is why your target goal is important. You have to stay calm and make your target price atleast you have basis when to buy and when to sell your coins to avoid panic selling and avoid losing you money.