Since I am retired productivity and I live in different worlds but good music does brighten my world. My mood dictates the genre; some days it's the blues but maybe the next is cajun zydeco. Anyday is a good day for Elvis.
When in a slump I go for an old favorite and that makes it all better. Some of that category are Mary Lasswell's books about the old ladies living together, drinking beer and eating. Very tame quick reads but I love those old ladies. These are not easy to find as they were written in the 40's and 50's but worth the search.