In bear market we are very emotion because we can't withdraw our money be patience at all time coz it will pump hard.. buy and hold sell if it's profitable.. you have your own choices on how you handle situation like this
According to the current situation holding is the preferable thing to do and as we all know that prices are facing a bit fall and keeping patience at this time is quite important to give strength to the bitcoin and as we all know that bitcoin will soon start rising so panic here will not only give you loss but bitcoin will also lose some values so be true believer and stay on the bitcoins side and you will be enlightened with profit soon,
Obviously 2018 did not affect the price of Bitcoin, maybe I make a little early decision, but there are people holding Bitcoin at the level of 20k dollars, I guess these people will not wait any more. And we can see decline in the price of bitcoin due to sales.