Having consistently high diastolic blood pressure at a young age can be due to factors like genetics, high salt intake, stress, being overweight, poor sleep, or sometimes underlying causes such as kidney or hormonal problems, even if you are already taking Envas. To reduce it, focus on lifestyle changes: limit salt (avoid packaged and salty foods), maintain a healthy weight, exercise regularly (at least 30 minutes most days), manage stress, get good sleep, avoid smoking and excess alcohol, and follow a balanced diet rich in fruits and vegetables (DASH diet). Since your diastolic pressure remains high despite medication, it is important to consult your doctor for review, as your dose may need adjustment or an additional medicine may be required, and tests may be advised to rule out secondary causes.