The purpose of this research study is to test a mindfulness app called Calm Health among young adults with type 1 diabetes or other absolute insulin deficiency diabetes. Mindfulness is the practice of being aware of your thoughts and feelings in the moment without judgment or negative reaction. All participants will receive mindfulness guidance and personalized feedback about the relationship among your mindfulness, blood sugar, stress, and sleep.

Inclusion Criteria:

1. Receiving diabetes care at Yale New Haven Children's Hospital or Yale New Haven Hospital.
2. Sign and date informed consent form we will provide
3. Willingness to complete procedures and availability for duration of the study
4. Aged 18-30 years
5. Diagnosed with type 1 diabetes (T1D) or other absolute insulin deficiency diabetes (latent autoimmune diabetes of adulthood, diabetes secondary to pancreatitis) for at least 1 year.
6. User of a continuous glucose monitor (CGM) in your routine clinical care for at least the past 2 weeks.
7. Able to use a smartphone.
8. Able to read and write English.

Exclusion Criteria:

1. Current meditation or mindfulness practice meeting or exceeding the study's recommended schedule
2. Current severe untreated psychiatric illness (e.g., bipolar disorder, schizophrenia, major depression, panic disorder, borderline personality disorder, organic mood or mental disorders) or active suicidal ideation
3. New or unstable psychopharmaceutical treatment in past 2 months.
4. Current or planned pregnancy during study period.

Survey scores, glucose, physical activity, sleep, heart rate, heart rate variability, respiratory rate

Start date: Publication of primary manuscript End date: Indefinitely

The data will be available immediately following publication, with no end dates. The data will be shared with researchers who provide a methodologically sound proposal to achieve the aims of the approved proposal. The proposals should be directed to Dr. Garrett Ash at Yale University (garrett.ash@yale.edu). To gain access, data requesters must sign a data access agreement.