I was diagnosed with high blood pressure in 2003, it was 150/90. They sent me away for 3 weeks and told me to be healthy, relax and come back.
I cut out coffee altogether, reduced my alcohol (although not massively), generally ate better and changed my workouts to be more cardio oriented.
3 weeks later it was 118/78 and they told me to go home and be happy.
Last time it was checked I think it was similar to yours 135/85 or so which isn't bad for people our age I think.