There is a lot that can be accomplished through prioritization, and this is an effective, easy productivity hack that anyone can adopt and immediately see results. However, it must be followed consistently.
Here it is: Do, immediately, any task that can be completed in one minute.
Answer an email, put something away, organize your desk, do something active, and so on.
This rule is easy to follow because the tasks are quick, yet have big results. It helps improve productivity by managing those small, nagging tasks and allows you to enter a calm state, feeling far less overwhelmed.