“…To date, conceptual models tend to categorize relapse using 4 major precursors/antecedents, 34,35 including the specific drug (agent), characteristics of the user (personal), characteristics of the user’s social relationships/setting (interpersonal), and environmental (situational) factors. Relapse precursors that have received the most support include negative affective emotional states, 34,36,37 cognitive-behavioral factors including self-efficacy/confidence, 38 outcome expectancies, 39 urges/temptations, 40 coping, 41,42 and motivation/readiness to change.…”