Bitcoin prices always going up but off course there are some drops in the midle but that is with everything. There will always be a rise at the end and i think the end of this year
will have a nice rising. So if you just hold some of your coins for the end of year 2016 you will be very happy with the profit you make.
Yeah holding till the end of the year can be really profitable, if halving allows you to make profits then you should sell your coin and collect the profits and buy it again when price falls after the halving.