Sounds like it’s time to learn something new. Interest sparks interest.
Pick anything. Russia. Ants. Recycling. Gemstones. Rodgers & Hammerstein. Sheep. Black holes. Really, anything starts to become interesting when you learn about it. And subjects branch. One leads to another.
Begin with a question. This site right here is a good place to find questions. Some of them are researchable. Pick one, research it, and follow leads. The world starts to open up one or another of its little mysteries, and it becomes more interesting.
As a bonus, you become more interesting too.