There are no second chances when it comes to first impressions.
Most people decide whether or not they like you within minutes of meeting you, so why exhibit anything but warmth and positivity?
People who build their personalities around intimidating others fall prey to shallow loneliness in the long run. Compassion and generosity are the tools by which lasting relationships are formed.
Greet new people as you would an old friend, and you’ll end up with more old friends once you’re old.