As in many aspects of life, your blood pressure treatment should have a clear and stated goal.
The goal needs to be reachable and within health limits. Not too high, and not too low.
Usually you and your doctor will agree on trying to achieve a systolic
pressure somewhere below 140/90 mmHg. Being elderly might mean you sometimes have to settle for a pressure around 150-160 / 90 mmHg. If you have diabetes, kidney disease or a very high risk of cardiovascular disease, you should try to lower the pressure slightly, preferably to a level of about 140-130 / 85-80 mmHg, depending on how long you have had diabetes and the presence of other diseases. For those who have diabetes, control of blood pressure is at least as important as blood sugar control to avoid complications. This is especially true if you have type 2 diabetes.
More on how to reach that goal in a later post :)