Every organization seems to have at least one Dr. No: someone whose role in life appears to be to come up with a dozen reasons not to proceed with an intriguing idea... or even to explore it further.
That's true in even the most traditional fields, but if you're working in an emerging field like social media, you probably run into it constantly. And you may have learned such strategies as...
Or you could do something completely insane: getting to know what makes your nemesis tick, identifying the fears or doubts that keep them up at night, and addressing them. In short, you could engage with the enemy honestly and try to bring them around to a more positive outlook. (And if that doesn't sate your lust to avenge a beloved cancelled initiative, you can always reflect on what Abraham Lincoln supposedly said about destroying your enemies by making them your friends).
Best-case scenario: you gain a supporter. Worst-case scenario: they win you over to their bleak, despairing view of the world. In which case, at least you can while away the hours... by finding reasons to say no to other people's projects.