To keep that from happening too much, I try to differentiate between “interesting” and “informative.” Interesting catches my attention. It is often amusing, curious or entertaining. Informative adds to my primary areas of focus. It deepens my useful knowledge and can be translated into tangible benefits in my work and life.
To understand what informs your work, consider what you are known for and what you want to be known for. Will you be able to use the material? Is there relevance to your work? These questions become the filters for your reading, study and research.