I take 40 mg of lisinopril daily. my blood pressure was 166/102 at 6am. i took my meds and around 9:30 am i had it taken again and it was 160/110 ??

Provided the cuff: used to measure your blood pressure is accurate, it sounds like you need a medication adjustment. Most patients with blood pressure in your range require three or more medications taken several times a day to obtain acceptable control. See your health care provider for a reevaluation in order to avoid long term problems associated with uncontrolled HTN.