We all have things that thoroughly tick us off. Sometimes Every time we get angry we are putting ourselves at risk for the problems high blood pressure can cause.
Short Term Risks: Even a short term bout of fury increases the likelihood of a heart attack or a stroke. If you add other things that cause stress (like the reason for anger in the first place) the chances increase. Is letting out your anger by smashing things and yelling at people worth your life...
Long Term Risks: Short bouts of anger can be defused fairly easily if they are rare. Once the situation has calmed down the person does and so does blood pressure.
On the other hand, if you are angry all of the time your blood pressure is going to be high all of the time. There are a lot of valid things out there that cause rage but they can't be fixed if those who feel it the strongest are dead.
Fixing the Problem
A combination of therapies could reduce your numbers and help you turn what you feel into something meaningful.