High blood pressure. Do to keep bp low.

Hi , I had checked my blood pressure for a week at different timings. I must have taken 5-6 readings. My readings are terribly high. Readings were in the range 140-165 systolic And 90-110 diabolic. I am just 22 years old. I have never done smoking. I don't drink alcohol either. Just started beer 5 months back but that too only in company parties.(alcohol is very rare) I am vegetarian. I am not overweight. My height is 177 cms and weight is 72 kg. In fact for last 5 months I used to do brisk walking monday to Friday to stay fit. I have lot of family responsibilities on me and eventually I have stress. But I guess everyone have stress in their life.  I am not able to understand how high BP can happen to me, I am shocked. This problem is not heridatory. My questions are 1. Is it possible to cure high BP naturally? 2. How it will impact my career and life? I have ambition of higher studies.3. i have read common remedies on net. what else i can do to keep BP low.?