Inclusion Criteria:  Stage I-III breast cancer or Stage I-III NSCLC who are currently in active treatment or have completed initial cancer directed treatments (surgery, radiation, chemotherapy) within the past 3 months; Are experiencing at least moderate anxiety (GAD-7 >10) or mild-to-moderate depression (PHQ-8 score 5-11); Are fluent in English; and Have access to smartphone, or tablet capable of running iOS or Android software.  Exclusion Criteria:  Previous history of cancer; <2-yr survival prognosis as determined by treating clinician; Currently participating in investigative CBT trial for treatment of anxiety or depression; Participant is unable to complete training, has cognitive deficits, more severe psychiatric conditions, lack of access to internet accessible device or psycho-social conditions (e.g., other social conditions, that would interfere with adherence to self-directed care), such that in investigator's opinion the participant would be unable to complete the study; Recently completed use of Blue Note Therapeutics Covid Cancer Care Program or other Blue Note Therapeutics-sponsored study; and PHQ-9 Q9 response >0 AND Columbia Suicide Severity Risk Scale (or equivalent) score of Category 2- "suicidal ideation" at screening.