I do not believe in anything like that. many experts say if the year 2018 bitcoin prices will be very high, but until now there is no sign if the price of bitcoin will rise.
Bitcoin needs just 10 good days in a year to reach 20k... REMEMBER THIS : )
The price of the bitcoin will increase again, if you believe bitcoin even the price you are confident that price become again 20k dollars or what price reach decemeber 2017. Maybe not 20k dollars this year because the highest price of the bitcoin in this year 2018 will be $50,000 but it's not 100 percent happen.