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.
Crypto isn't what you think and isn't as easy as getting benefits from crypto. Selling at low prices will be very risky for losses, and I think in a bad market like now holding is the best way.