A prediction is just a prediction until it happen. So let's not rely only on prediction because if it does not happen we will be losing hope it will never really happen even if it does and curse bitcoin again. That's not I am. So let's just hope that the market will move favorable with his predictions and so hoping also that ATH will happened next year.
Looking at the numerous speculations on the price of bitcoin probably at the end of the year, it is unlikely that the price of bitcoin would reach $8000 or as speculated by the OP. 2019 can bring more hope to crypto enthusiasts if we workout things very well.