 The second bucket is variety. Introduce some change into your life. Again, this can mean something big like switching jobs or moving somewhere new, but it can also be something smaller like meeting new people or taking on a new skill. In any one of those situations, what you're doing is you're putting yourself in a state of learning. You need to learn about something new. And it turns out that learning is one of the things that really induces the most joy in people.