I only usually rewatch films whenever I feel like I’d need a pick-me-up. Something light-hearted, so I’d usually go for The Secret Life of Walter Mitty.
But during my recent movie marathon, I discovered more films which are actually good contenders for a rewatch such as The Fundamentals of Caring (highly recommended) and The Land of Steady Habits.
I go take a walk. Beach would be ideal, but nowadays even at the park or lastly at the mall. Anywhere relatively safe to just walk and listen to music. I find it improves my mood.
Eating good food and taking a shower after a rough day helps a lot too.