Amongst 600 diabetes patients receiving structured care in Hong Kong through the JADE Program, half of them will be randomized to receive peer support (n=300) including personal coaching by 30 trained mentors (1 mentor to 10 diabetes patients or mentees) through regular phone calls and sharing sessions, and the other half (n=300) will continue the usual diabetes care in their clinic. The 30 mentors are themselves diabetes patients who have good self care and are motivated to support their peers. The mentors will be trained to deliver peer support intervention under supervision by a program manager. The 300 diabetes patients (mentees) randomized to the peer support group are the intervention targets of these 30 mentors. They will be reminded to use the TLC for knowledge enhancement and motivational support.