dob is 12/12/1986, a tiger but i experience a continous nervous tension no matter how prepared i am to talk, the tension ignites even at the sight of a stranger.....

Don't be frustrated! You have your own strength and if you can well use them all, you will get success some day. At present, you should talk more to others to be more confident and positive. My suggestion is that keep a diary and you will speak everything out, which will be of great help.