Let’s begin with one number because it changes how we understand the problem.

A research group at UC Irvine has spent years measuring how long people remain on one screen before moving their attention to another. Instead of asking people to remember how often they switched, the researchers recorded what actually happened.

The results show a clear change over two decades:

• 2004: people spent an average of about 150 seconds, or two and a half minutes, on one computer screen before switching.
• 2012: the average had fallen to 75 seconds.
• 2016 to 2021: the average remained between 44 and 50 seconds. In 2016, the median was 40 seconds.

In other words, people working on computers now switch their attention between screens about once every 47 seconds on average.

This is not a measurement of someone’s most distracted day. It is the average.

The time spent on one screen has fallen by more than two-thirds in less than 20 years. Such a rapid change suggests that the modern working environment plays a major role. The tools, messages and systems surrounding our work create more opportunities to switch attention than they did before.

This helps explain why the instruction just concentrate is rarely useful. It treats attention as an act of willpower happening against a neutral background.

But the background is not neutral. Many digital tools are designed to attract your attention, notify you of changes and make switching easy. Concentrating inside that environment requires more than simply deciding to focus.

This program is not a collection of tricks for forcing yourself to try harder. It explains how attention behaves and introduces a small number of practical changes that work with it.

Three important points before you begin:

• This program does not assess or diagnose ADHD. Nothing in it should be understood as doing so. If difficulty concentrating has been present since childhood and affects several parts of your life, not only your current job, consider discussing it with a qualified clinician. Appropriate assessment and treatment are available.
• This particular digital program has not been tested as a complete package. The research behind the lessons is established, and the techniques come from tested approaches. What has not been tested is this exact combination of content in a self-guided digital format. Treat it as carefully sourced guidance, not as a proven digital treatment.
• Difficulty concentrating is often not the main problem. Lesson 13 explores what may be happening underneath it. If you read only one lesson in this program, make it that one.