What are the ways of lowering blood pressure?

I am here for myself. I am 42 years old and I am suffering from high blood pressure. My blood pressure is quite high and the recording about a week ago was 140/100. I am very much concerned because of this and so I would like to know from people about the ways of lowering blood pressure? Also tell me what all I need to do along with diet and exercise in order to reduce my blood pressure?