This study examines whether adding brief guided mindfulness exercises to accelerated Transcranial Magnetic Stimulation (TMS) treatment can help people with depression feel better and maintain those improvements longer. Participants will already be receiving accelerated intermittent theta-burst stimulation (aiTBS) as part of their clinical care. During the breaks between TMS sessions, they will have the option to listen to short, app-based mindfulness practices using the commercially available and free Healthy Minds App. We will track whether this combined approach is practical, how easy participants find the meditations, and whether practicing mindfulness during treatment improves mood, well-being, or long-term recovery. The information gathered will help us design a larger study focused on improving the durability of TMS outcomes.