Is it possible to improve your attention span?

Yes, it is possible. You should put in a lot of effort to improve, and there may also be other reasons for your attention span, such as genetics, diet, health habits, and the severity of the impairment.

Olivardia adds, “You may also never be able to fully repair your attention span if you had a case such as head trauma, medical conditions, or severe substance. Because of this, you cannot always fully repair your attention span, but you can always work to improve it." 

Improving attention changes some of your daily practices and the timeline of how long you've had short attention and your health.