When planning your New Year's resolutions, I have this recommendation: spend as much time reflecting on the previous year than creating (likely soon to be broken) resolutions.
What were your great achievements? How could you have more of them next year?
What would you wish you did differently about 2015? This time next year how could you avoid that feeling again?
2016 is full of anticipation right now and it will be over before we know it.
2015 is done but we don't need to let go of its teachings and memories.