No, best thing to do is to hold till the next bull season comes by.
If that's not possible for you, then sell when the market recovers to around ~$8000. I believe that is going to happen soon, since we've bottomed out at $6730 today and we've already recovered $500 per coin within a few hours.
I don't believe there to be much point selling below $7000 because that is pretty much the buy target of a lot of people. You're literally selling into the eager buyers hands, and you yourself will probably buy back once the next bull market starts happening and regret your decision. With market cap already below $300 billion it shouldn't drop that much further. I've said in another post I think lowest BTC will go is around $3k. This is why I believe in long term holding, sometimes you are tempted to sell at prices so damn low, yet you're not willing to sell when prices are skyrocketing.
Yeah the poisoned chalice of holding is the natural instinct to regret unrealised profits at past prices, coupled with the knowledge that many alts would have given far better value.
Which is why, if you're holding, don't pay attention to everything else around bitcoin. That's just white noise til you meet your end point years from now.
I'm selling whatever I need whenever I need. When I'm lucky I sell at a top. When not so lucky, I gotta sell at a dip, like what I had to do today.