Inclusion Criteria:  Ability and willingness to provide written informed consent Ability to sufficiently communicate in English as assessed through phone screening and the ability to answer study questionnaires At least 18 years old Seeking psychological treatment at CARD (participants do not need to meet criteria for a specific Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition diagnosis) Willingness to abstain from other psychotherapies for duration of study (up to 1-month follow-up; this is so we can be more confident that changes observed during the study are attributable to the study intervention rather than an external intervention; clinically, it is also typically counterproductive for a patient to see multiple therapists at the same time) Working smartphone with internet connection Stable on current psychotropic medications (or off medication for 2 weeks) If participating remotely, access to private room where they will not be disturbed during study sessions  Exclusion Criteria:  Suicidality (ideation, intent, or specific plan) significant enough to require higher level of care than outpatient, as determined by CARD phone screening (patients on the CARD waitlist who comprise our recruitment pool are prescreened), the Mini International Neuropsychiatric Interview (MINI), or otherwise determined by the Investigator Currently receiving another psychological treatment Active psychosis, mania, or significant personality dysfunction as assessed through CARD phone screening (patients on the CARD waitlist who comprise our recruitment pool are prescreened), the MINI, or otherwise determined by the Investigator Serious neurological impairment as assessed through phone screening items or otherwise determined by the Investigator Any other reason as determined by the Investigator which may lead to an unfavorable risk-benefit of study participation, interfere with study compliance, or confound study results