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.
We cannot predict what would be the price of bitciin this year but it is all connected with the demand of the people to bitcoin, also to the whales, etc. The more the demand, the higher the percentage that bitcoin will pump. The more the whales hold their bitcoins, we can assure that the price of bitcoin will remain or pump unless they will sell it and it will have an impact to the price of bitcoin.