do not panic, stay calm under any circumstances, the rise and fall of bitcoin is a natural thing, you have to be patient, I'm sure everything will be back to normal for the future..
Yes, don't panic in most cases in this situation holding is good when the price is not yet profitable. I agree that a lot of surprises thtos year 2018 and we will received a huge profit when holding our coins. Market will recover and I believe it will.