Participants in the human coached PST arm will serve as active treatment controls given the demonstrated efficacy of human coached PST in depression and anxiety. They will complete 8 PST sessions with a human coach; first session in-person and remaining sessions via videoconferencing (i.e., Zoom preferred; with phone calls allowed) on the same 4 weekly and then 4 biweekly schedule as that for Lumen participants. Participants will receive a study iPad to use for their PST sessions via zoom. Participants also complete the PHQ-9 and GAD-7 during each session. Participants will receive a certificate of completion.

Waitlist control participants will only complete assessments during the 18-week trial period. At the end of their 18-week assessment, they will have the option to complete 8 PST sessions on their assigned iPads.

PSWQ is a self-reported, 16-item, Likert-type scale that measures the trait of worry.

PANAS consists of two 10-item self-reported scales to measure positive and negative affect. Each item asks about the extent one has felt a positive or negative feeling on a 5-point scale of 1 (not at all) to 5 (very much).

Participants' problem solving abilities will be assessed using the reliable and valid SPSI-R:S that contains 25 items in the following 5 subscales: positive problem orientation (PPO), negative problem orientation (NPO), rational problem solving (RPS), impulsive/careless style (ICS), and avoidance style (AS). Each item is rated on a 5-point scale ranging from "not at all true of me" (0) to "extremely true of me" (4). SPSI-R:S is a short version of the long SPSI-R:L form.

DAS (Form A) is a 40-item self-reported scale that measures the presence and intensity of dysfunctional attitudes. Each item is rated a 7-point Likert scale (7 = fully agree; 1 = fully disagree). The higher the sum of the 40-items, the more dysfunctional attitudes an individual possesses.

The Sheehan Disability Scale is a validated questionnaire that measures functional disability and is sensitive to treatment effects in clinical trials. Patients rate the extent to which their symptoms impair work/school, social, and family life on a visual analog scale from 0 to 10 and answer the number of days when their symptoms cause them to miss work/school and be unproductive at work/school.

The WPAI was created as a patient-reported quantitative assessment of the amount of absenteeism, presenteeism and daily activity impairment attributable to general health in the past 7 days.

Daily end-of-day assessments will be captured over a one-week period at baseline and every 2 weeks (i.e., on weeks 2, 4, 6, 8, 10, 12, and 18). During active treatment in the Lumen arm and the in-person PST arm, this will occur for 3 days prior to, the day of, and for 3 days after a scheduled PST session. For waitlist controls, this will occur for 7 days starting on Sunday of each assigned week. Daily mood will be measured using 8 mood items that capture both the arousal and valence components of the circumplex model of affect.

Outcome Description Daily end-of-day assessments will be captured over a one-week period at baseline and every 2 weeks (i.e., on weeks 2, 4, 6, 8, 10, 12, and 18). During active treatment in the Lumen arm and the in-person PST arm, this will occur for 3 days prior to, the day of, and for 3 days after a scheduled PST session. For waitlist controls, this will occur for 7 days starting on Sunday of each assigned week. Daily stress will be assessed by report of stressors on that day; when stress is reported, the nature/characteristics of the stressor and response will be assessed. The type of stress will be assessed using a list of 12 categories of social problems, followed by reporting the perceived severity of the most salient stressor that day, and the degree to which the participant has had stressor-related thoughts (e.g., intrusive thoughts). Finally, we will capture an overall perceived stress report for each day.

Daily end-of-day assessments will be captured over a one-week period at baseline and every 2 weeks (i.e., on weeks 2, 4, 6, 8, 10, 12, and 18). During active treatment in the Lumen arm and the in-person PST arm, this will occur for 3 days prior to, the day of, and for 3 days after a scheduled PST session. For waitlist controls, this will occur for 7 days starting on Sunday of each assigned week. Two components of these assessments will capture a summary of appraisal and coping processes associated with daily experiences. The appraisal items will focus on assessing "problem orientation" or the general awareness and appraisals of problems during the day. The coping items will focus on assessing "problem-solving style" or the methods of planning and coping with the most salient problem experienced during the day.

GAD-7 is a valid and reliable 7-question scale to screen for 4 anxiety disorders: Post Traumatic Stress Disorder, Panic Disorder, Generalized Anxiety Disorder, and Social Phobia. A score of ≥10 indicates a high probability of 1 or more of these disorders.

UEQ-S is a validated instrument containing 8 items from the 26 items of the original UEQ. The 8 items are grouped into 2 subscales, pragmatic and hedonic quality (4 items each). A total value reflects the overall user experience.

WAI-Tech was based closely on the original 36-item WAI and uses a parallel set of 36 items rated on a 7-point scale (1 = "never" to 7 = "always") to measure the level of alliance between patient and digital coach along 3 domains: Task (12 items), Bond (12 items), and Goal (12 items). The Task subscale measures how responsive the digital coach was to the patient's focus or need. The Bond subscale measures the degree of the affective bond between patient and digital coach. The Goal subscale measures the extent to which goals were important, mutual, and capable of being accomplished. The WAI-Tech yields 3 subscale scores and 1 overall score.