Focus exercises that practice staying with one thing
Attention is easier to practice when the exercise is concrete. Start with short periods of deliberate focus and remove avoidable interruptions.
Timed single task work
Choose one task and work on it for a defined period with alerts and extra tabs out of reach. The exercise is returning to the task when your attention wanders.
Detailed observation
Study an object, image, or room for a minute. Look away and write down as many details as you can remember. Then compare.
Read and retrieve
Read a few paragraphs without switching tasks. Pause and state the main idea in your own words.
Puzzle sessions
A puzzle with a clear goal can create a contained attention task. Keep the difficulty high enough to require effort without making the activity frustrating.
If you prefer a packaged routine, read how Gamma Game combines audio and puzzle activity.
Progress the exercise instead of chasing novelty
You can make a simple attention exercise harder by extending the time, increasing the amount of information you must hold in mind, or reducing external prompts. Change one variable at a time so you can tell whether the task is actually becoming easier.
Keep expectations specific
Getting better at sustained reading, observation, or a puzzle is a useful outcome on its own. It should not automatically be interpreted as evidence of a broad neurological change. If a commercial program promises wider effects, look for evidence that measures those wider effects directly.
Compare this approach with structured cognitive training and brain games.