2016 is gone and you cannot bring it back. 2018 isn’t here and you cannot drag the future into the present. All you have is 2017 right now and 2017 is where the happiness is if you are willing to uncover it.
I say uncover it, because happiness is the natural state of the Soul. As such, we need to divest ourselves of all the obscuring layers of conditioning and anxious thinking, and allow ourselves to feel happy now. Let your natural state of happiness shine through. You will find it by by-passing your mind and centering yourself in your heart.