If you 'bought in' during the last month or so insane runs up then yes you are going to see some losses. I have been in all sorts of markets fro many years and rarely have I even see the type of upswing coins had from Thanksgiving to new years. I know a lot of new bodies were joining the game but even with that that upswing was nuts.
In a nutshell, hold and ignore the markets if you can stand the swings. We are in the very early stages of a multi-year 'game' and honestly if you aren't in it for the long haul you are making a huge mistake