This might not be too helpful, but I had something similar when a serious MDD attack hit a few years ago. Anything from that year -- music, games, anime, videos, etc. -- became somehow associated with the pain and triggered more of the same. The only "solution" was to give it time and get used to the fact that the attack was over and done with. It probably took a year or two to get there.

Right now all those things I avoided have the opposite effect -- a reminder that I had sunk in the depths and made it out. Maybe you can think of 2017 the same way (i.e., that you were faced with the worst and beat it).