Inclusion Criteria:  Have anxiety and/or depression symptoms, scoring 10 or above, in accordance with Patient Health Questionnaire (PHQ-9) or General Anxiety Disorder-7 (GAD-7); Hong Kong residents aged 18-65; Have access to the internet and have a valid email address for communication; Able to read Chinese and type in Chinese or English; and Willing to provide informed consent.  Exclusion Criteria:  Had received psychotherapy for depression and/or anxiety in the past 6 months; Have reported the diagnosis of major psychiatric, bipolar disorder, medical or neurocognitive disorders, or have experienced dissociative symptoms that make participation infeasible or interfere with the adherence to the digital self-help intervention; Will participate in another similar study/ other similar studies concurrently; Any suicidal ideation (scoring above 2 in item 9 in PHQ-9) Have reported substance abuse or dependence history; Had changes in psychotropic drugs within 2 weeks before baseline assessment; and Pregnancy.