Switch off the "big lights" (overhead LEDs). Use lamps, fairy lights, or candles to create a soft, warm atmosphere.
If it won't matter in five years, don't spend more than five minutes being upset about it.
Stop thinking about what you should be doing. If you’re resting, rest fully. Guilt is the enemy of chill.
Do something that doesn't involve a goal or a screen. Think: coloring, Lego, plant care, or flipping a vinyl record.