In any interview, one of the most important fators to succeed is "Confidence". Confidence is the ability to be confident in all aspects of one's personality. With self confidence, we can portray a better picture of ourselves. Our voice, eye-contact and gestures will take a new shape and help us in the process of interview.
Some of tips are given below.
Talk firmly but not aggressively.
Show the smile on your face, it hides your anxiety.
Shake the hand firmly, it shows that you are confident.
Maintain a positive posture and gesture. Sit upright and do not shake feet,head or soulders.
Make eye contact as much as possible. Do not look around the room or at the roof.
Show the attitude to learn new things
Do not tell your weaknesses such as I fear something, I do not know it at all etc.
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Usually any company/organization looks for a candidate who is willing to learn and who maintains integrity ratherthan for a person who is technically string but not trustworthy and arrogant.