I always support with Ethereum holding.Don't sell your Eth at this moment you see how much ETH price increasing? you can keep it hodl in 2018 whole year.Really you are gainer as a eth holder after in this year.Also i hodl some eth it's just working your future life security.When you have to badly needed money just this one is your strong support.So i suggest you never sell eth as long as it doesn't price 2 thousand dollar.