ya me to same . i feel nervois

It depends on the type of the situation and your role in the context. If you are approached, it's the type of person and his/her method that makes you feel comfortable or freaks you out. But, if you are the one approaching, it’s too normal to feel that kind of anxiety. But, as it’s listed above, try to relax, take a deep breath and know that it’s only a person, just like you! But, if you are afraid of any stranger, it could be a xenophobia, go see a shrink :p

Be straightforward yet friendly.Put on a grand smile. Look directly in a strangers eyes and introduce yourself. Relax and let everything else follow.