Inclusion Criteria:  Report heavy drinking (i.e., 5 or more drinks in a day for men, 4 or more drinks in a day for women) at least twice or report any 7 day period at hazardous drinking levels (greater than 14 drinks for men, greater than 7 drinks for women) in the past 30 days based on responses on the Timeline Followback (TLFB; Sobell and Sobell, 2003) HIV positive Fluency in English Willingness to attempt alcohol abstinence for at least 30 days and then to attempt alcohol use on fewer days than at baseline after that Willingness to use smartphone applications and biosensor devices (i.e., breathalyzer device and wrist sensor) for alcohol use reduction purposes in the study. If participants do not have a compatible smartphone to use, they will be loaned one by the study  Exclusion Criteria:  Axis I psychiatric disorders including substance use disorder other than mild or moderate alcohol or mild cannabis use disorder Current alcohol withdrawal as indicated by a score of 8 or higher on the Clinical Institute Withdrawal Scale (CIWA; Sullivan et al., 1989) or lifetime history of medically assisted detoxification Self-reported consumption of over 300 drinks in the past 30 days on the TLFB Contact PD/PI: Cook, Robert L Project-001 (000) Data and Safety Monitoring Plan Page 455 Two positive breath alcohol concentration (BrAC) readings (i.e., > 0.00%) at an in-person screening appointment. After participants blow their first positive BrAC, they will be allowed to reschedule and participate at another time, however if they blow a second positive BrAC, they will be excluded from this study and offered referrals for alcohol treatment. Positive urine screen indicating recent opioid use Currently seeking or past-12-month history of inpatient or intensive treatment for addictive behaviors Psychosis or other severe psychiatric disability Pregnancy, nursing or lack of reliable birth control use for women who have not yet reached menopause Diagnosed major psychiatric disorder Pregnancy Opioid use Recent inpatient or intensive treatment for addictive behaviors