I think bitcoin could well reach $2,000 - $3,000 if this $6,000 support get's broken. If you would sell now chances are high you could buy back and thus double your btc holding.
This is not financial advice, just a thought.
And this is not a good year for crypto I believe. Late 2019 we'll see some action.
If you wanted to sell then you should have sold a long time ago, this is not the moment to sell, you are only going to lose money that you could easily recover in just a few years if you were patient enough to keep holding your coins during all that time.