Inclusion Criteria:  be ≥18 yrs old meet lifetime DSM-5 SUD criteria have a Recovery Initiation Date less than 3 years prior to the time of enrollment be able to read independently be free of legal problems that could limit participation reside in the U.S. anticipate continued Internet access (to ensure ongoing contact and data collection) be a registrant of the International Quit and Recovery Registry (IQRR)  Exclusion Criteria:  Minors will not be included Prisoners will not be included. If participants become incarcerated during this study, they will not be contacted to complete assessments during their incarceration. If the incarceration ends during the study, they may be contacted to participate in assessments. Adults who are not capable of consenting on their own behalf