I think I m bad temper... When people criticized me, I get easily irritated and mad.
Though I do not do something dangerous, the anger doesn't go away immediately. It lasts hours.

Any solutions?

*blood pressure normal. (on d lower side)

Hey, I once read a book called A complaint free world (不抱怨的世界）. I read the chinese version.

The philosophy discussed in the book completely changed my views on other people, and I learnt to see things in other people's perspective.

That calms me down a lot.

Also anger management is basically emotional control - and it all comes down to using our willpower to suppress being controlled by emotions.

Willpower: Rediscovering Our Greatest Strength - this book is a good read if you would like to know more about willpower.

Anyways the key takeaways:

Fluctuations in sugar levels can deplete our willpower quicker. Low GI foods are better for our willpower.
Meditation helps to improve our willpower.
Adequate sleep and good nutrition are important too.

Hope this helps.

Same boat as you TS.. still working on this