If you're gonna be a doomer, this seems like the right attitude to take:
I begin the year convinced that our civilisation will collapse soon but at the same time enjoying the continuous Mozart on Radio 3, abandoning alcohol for the month with enthusiasm, and committing myself to three runs and 70 000 steps a week.
This mindset reminds me of a heroin addict I once knew who was also a health food nut and strict vegetarian. I once asked her why she was such a dietary stickler when she was poisoning herself with smack. "That's even more the reason to pay attention to what I eat," she said.