After randomization and baseline data collection, participants will be linked to an experienced behavior counsellor and to receive a brief alcohol use counselling with health education, including health risks in alcohol use, advice to reduce alcohol consumption and available alcohol use services in Hong Kong with self-help psychoeducational materials. Guided by WHO, personal feedback will be provided according to Alcohol Use Disorders Identification Test (AUDIT) score: 8-15 indicates at-risk for alcohol use, 16-19 indicates potentially harmful or hazardous drinking, and ≥20 indicates alcohol dependence. For subjects with potential risky drinking (3-8), AUDIT score will be explained and readiness to change drinking habits will be assessed.

The behavior counsellor will invite the participants to join a psychological support group for interactive counselling. Counsellor will lead the discussion and provide counselling according to the stages of change for alcohol use. Pre-contemplation: provide information about the risks of drinking; Contemplation: Emphasize the benefits of reduction and quitting, discuss alcohol problems and achievable goals for reduction or quitting; Preparation: discuss goal and give advice and encouragement; Action: review advice and provide encouragement; and Maintenance: give encouragement. Participants will be encouraged to interact with counsellor on any concerns about healthy lifestyle, mood fluctuation, and other ways to deal with cravings.

The Patient Health Questionnaire-9 (PHQ-9) is a self-reporting questionnaire comprising 9 items that evaluate the frequency and severity of depressive symptoms during the last 2 weeks (e.g., "Little interest or pleasure in doing things", "Feeling down, depressed, or hopeless"). Responses are scored on a 4-point Likert scale (0 = not at all to 3 = nearly every day), with total scores ranging from 0 to 27. Scores are typically interpreted as follows: 0-4 (minimal symptoms), 5-9 (mild depression), 10-14 (moderate depression), 15-19 (moderately severe depression), and 20-27 (severe depression).

This project measured the participants' stress level by using the Perceived Stress Scale (PSS-10). This is a ten-item scale that measures how often stressful events occurred the last month using a 5-point Likert scale from 'Never' to 'Very Often'(0 = never to 4 = very often). Total scores range from 0 to 40, where higher scores indicate higher levels of perceived stress. An example of an item was: "How often have you been able to control irritations in your life?"

Perceived family well-being will be measured by the Family Apgar Scale. The scale comprises 5 core items that measure key dimensions of family well-being: adaptability (ability to cope with crises), partnership (shared decision-making and mutual support), growth (encouragement of individual development), affection (expression of warmth and care), and resolve (ability to solve conflicts effectively). Respondents rate each item on a 3-point Likert scale (0 = hardly ever to 2 = almost always), yielding a total score ranging from 0 to 10. Scores are interpreted as follows: 7-10 indicates healthy family functioning, 4-6 suggests moderate family dysfunction, and 0-3 signifies severe family dysfunction.