The price will stable in small range so its time to trade altcoin and hold bitcoin.I do not think it will be crucial year for bit coin, i just think its price will be more constant.I think this year will be a ground breaking year for bitcoin as well as other cryptocurrencies.
It's not near to be stable even at the beginning and it will be wild ride till we reach 2019 trust me. Price can't be stable when theres to much speculation going on, we need several years to pass and hope that price will be stable at end - it's not an easy game and an easy market this is on global scale and you don't even have many people who entered the crypto arena.