BTC has had a unbelievable year, but it is now starting to come to a head in the final weeks and days of 2017.
Right now, it appears that BTC is making a large bear flag which should see it hit around 17k before potentially dropping to ~9k.
Now, this is BTC, so there's always a caveat. I've seen BTC break up out of rising wedges, head and shoulders' and bear flags before, so just keep a close eye on the price action around 17k and be prepared to close your longs.