My main advice would be to make NONE of this about you. Be genuinely curious about others. Really listen to them. Look in their eyes when they are talking to you and when you are talking to them. Completely put the notion of you needing or lacking friends in the backseat and put an interest and genuine caring about the lives of random people you meet in the front.

You can't go into this with the goal of gaining something. Go in with the goal of giving of yourself -- your time, attention and interest.

Do the reps on this and you will become a person people want to be around.