I like the idea of a happy light, I always say I’m going to get one but I never do. Layers for sure. On super cold days I do cotton socks with huge fluffy socks on top, then leggings and a tank top, jeans/sweatpants and a long sleeve shirt with a big sweater on top then obviously ski pants, coat, scarf hat and gloves. I use the little cotton gloves with waterproof gloves on top. That might be overkill for some people but I don’t handle the cold well at all