A 44-yeаr-оld mаle with а lоng histоry of opioid use disorder presents for a follow-up appointment. He reports that he has not used opioids for the past 7 days, has recently attended two Narcotics Anonymous meetings, and has attended regular counseling sessions to manage his cravings. He adds, "I am using every tool available to me and working hard to reshape my habits." Based on the Transtheoretical Model of Change, which stage of change is he exhibiting?