I always base on speculations coming from different speculations of cryptocurrency analyst and most of them are telling that bitcoins might reach $50k dollars this year so keep on holding your coins and wait for the price to pump up.
Maybe you are right because this is crypto world and anything is possible here. But if we look the reality, the answer is different. It will never reach to double price than that of today. I tis very hard because of the low demand from the people around the globe. When there is no demand how the price will increase. People are now investing in Altcoin mostly.