How to use the online timer
Fifteen minutes is a solid session length for a general mindfulness practice, giving enough time to move past the initial mental noise and settle into a steadier, more observant state without demanding such a large chunk of the day that it becomes hard to keep up. Shorter sessions of five or ten minutes still have value, but fifteen tends to be where a lot of practitioners feel a session properly settle rather than ending just as it starts to click.
Mindfulness isn't about emptying the mind of thought, which is a common misconception that puts people off the practice early on — it's closer to noticing thoughts as they arise and gently letting them pass without following them down a chain of further thinking. A wandering mind during the session isn't failure; it's simply what minds do, and noticing the wandering is itself part of the practice.
A consistent time and place for this fifteen minutes, even a corner of a room set aside just for it, tends to build the habit faster than a session that moves around unpredictably from day to day. Sitting comfortably rather than rigidly matters too — discomfort in the body pulls attention away from the practice just as readily as a busy mind does.
Common questions
Am I doing it wrong if my mind keeps wandering?
No — noticing the mind wander and gently returning attention to the practice is a core part of mindfulness, not a sign of failure.
Is fifteen minutes better than five or ten?
It gives more time to settle past initial mental noise, but shorter sessions still have real value, especially when starting out or short on time.