The $6k remains the key and as it is being respected by the market Bitcoin should start rising. In 2018, Bitcoin holds great upside potential as the price could reach one of the two key resistance levels.
The first resistance confirmed by two levels is at $23.5k, that is a 300% growth potential. The second resistance is at $37.5k level, which could result in a 540% this year along.
However, it could take some weeks for BTC to consolidate and price might produce a spike below the 6k , prior of the strong rise. Nevertheless the long-term trend remains and it is only a matter of time before Bitcoin will establish a new all-time high.