Forget the two choice scenario, I say everybody has three choices speaking of mindset, way of thinking. It's not either black or white, yes or no, positive or negative. There's always a gray, a maybe, a balance between them. Look for instance the best example for right now: today is the 31st of December (at least for me) and either you stay at home or go out, you will be celebrating with family and friends, of course you could be enjoying in pajamas in your house (no problem with that) but you most probably try to be more "fancy", try to be at least a bit more careful about what you do with your hair/face/dress.
Well in this case, you could see it in a negative way, think that you're smiling and being nice with those family members that you didn't see the whole year and maybe your dress you're wearing is not even something you ever wore and you may feel that all of this is just pretending the last day of this whole year somebody I was not.
Or you could look at the bright side and say, I've spent this whole year stressing, maybe being sad or busy and it's good occasion to see all those people I didn't see and spend time with them even if it's the last day of the year. Better late than never, plus I have the night.
I think that these two options are neither wrong or right, I think that there is a solution right in between them: I fine line that combines them. I call it, the ...but... rule. It is exactly what it sounds like:
In a YouTube video, (yes I'm into that too :P ) a really cute couple said that because of what happened in their lives and remembering how they felt at those moments, they have set a rule that every now and then, they just say a few bad things that happened and then say twice more things that are good, positive thoughts. That's what I call balance. So getting back to my theory, when you feel down about something, you can just accept the fact that this has happened. "It doesn't excite me very much to see my cousins I see once a year maybe less BUT it's also a good thing because..../there are also positive things about it because....."
That way, you don't get ignorant about that bad thing and you won't get shocked when it happens but on the other hand you enjoy yourself keeping that other thing(s) in your head and maybe even discovering that this negative thing of yours is not even that big of a deal! :)
Anyway that was just a piece of advice I would like to give to anybody who reads this because I know I would need it sometimes, and I hope I didn't offend anybody. Of course nobody has to believe or apply what I say and don't take too seriously. Seriously. :)
P.S. : I'd love to know thoughts about this if you already applied this in your life or if you think it's a good/bad idea in the comments, thanks!