<qa>  What is the effect of self-efficacy and intrinsic motivation on adherence?The project aims to: 1 determine whether patients who receive motivational interview counseling have greater reduction in both systolic and diastolic blood pressure than those in the control group at 12 months. Clinic blood pressure readings will be assessed at baseline and at every three months thereafter for one year and 2 assess the effect of self-efficacy and intrinsic motivation as potential mediators of motivational interview on adherence. Self-efficacy and intrinsic motivation will be assessed at baseline and every three months thereafter for one year. 