How do you stay motivated and positive during the winter/holidays?

How do you stay motivated and positive during the winter/holidays? I'm curious!

Now that it is colder, wetter and darker outsite it can be hard to stay in the right mindset. On top of that, holidays are around the corner. People are preparing for that and looking forward to it, but still there a couple weeks to get through with a lot of things that can be very gray or gloomy at times. Even when you get to the holidays, it can also bring pressure or be overwhelming to be well prepared, on your best behavior and deal with family or the challenges that come with these days. Talking consumption, interaction/loneliness, self-care and others.

I find this very difficult myself as well. For example this week, because of the cold I am getting little cuts in my lips that are annoying and will not heal because they open more everytime I eat. I finally have a comfy position and my room is warm, having to get up and get something or go outside: the motivation is just lower. Want to make the effort to go for a healthy walk, it rains again... 

All that stuff you know, the little things that can be big things if they're building up or if your mental health or conditions put more emphasis on them. I was having a very slow and unmotivated week myself, that's why I thought of this topic and wanted to write it out because I think it affects a lot of people during these days. 

What kind of advice can we give each other? :)