Im just wanna know opinion some people about bitcoin price in the end of 2017.if see price of bitcoin now and prediction trader,are you scare to buy or sell bitcoin?or Precisely you dare for buy and sell bitcoin?
I sold 50% of what i own . I couldn't risk it 18k is so high and even if the price go up more i won't regret it that much because i would still have 50% or if the price crash i would still have cashed out 50% 
at the end do what makes comftable and don't be greedy.