QUOTE(Pseron Wyrd @ Jul 16 2013, 03:17 PM)

I was once a musician who traveled around the country. I met new people all the time, went to parties with them, did drugs with them, had sex with them. I'd wake up not knowing what town I was in or the name of the person snoring next to me or what chemical was responsible for my massive headache, ect.
Teach me, Master.
(That goes against the jist of what you're saying, I realize. No disrespect intended.)
That being said, your thoughts determine your reality in my short, limited experience. I am not necessarily a 'social butterfly' but I am much more outgoing now than when I was in my late teens and early twenties.
Girls would smile and flirt, and I would shut down. People would say 'Hello' or 'Good Morning' and I would look down at the ground. Few friends I had would try to get me to be more sociable. To no avail.
Then, I forced myself after reading an article on smiling.
Turns out if you smile, even if it is false, you're actually drastically rewiring your neurons. The act itself changes your response to things. You begin to smile genuinely soon after. I was tired of being miserable, so I tried it as an experiment. I figured if I was ashamed of doing it by myself with no one looking, there had to be a problem. I was, and so I was determined to fix it. So I practiced smiling.
There's a similar therapy technique, where one is advised to wear a rubber band around their wrist and to flick themselves whenever they find they are having angry or frustrated thoughts. The minor pain associates the thoughts with something unpleasant.
Basically, don't just openly accept anyone. But, think of what you enjoy, find your bliss/balance with other people. Cup of coffee at the local joint never hurt anyone...usually. Unless you spill it. Get iced just to be safe.