Todays "Jen"~ism
Lonliness is self-taught. By nature we are creatures that are meant to seek companionship in the form of Divinity (meaning our relationship with God our Father, Jesus His Son, and The Spirit that dwells within us upon being saved), friends, family, and a mate. If you are lonely; the thing you really should be looking at is the huge wall standing right in front of you that you built yourself. Noone else can build a wall around your life, and Yes; I understand being hurt by others making it difficult to trust, but there is a big difference between being overly trusting and trusting those that truly love you.
The longer you prevent anyone from knowing you; the closer you get to not knowing yourself. You see when you are not put into situations or settings where you are tested in any way, shape or form; you don't know how you will react. You don't know what you are capable of. You don't know how you'll feel when the situation is over. Therefore there is no change, no growth, and you haven't learned a thing.
~just some food for thought.
If you have social anxiety, put your faith in God and not yourself; He will put you in the correct social situations. He'll never steer you wrong if you actually listen to his guiding. "LISTENING" is key to guidance. Sort of like a child who keeps kicking a wall. The parent says "Stop kicking that wall, you will hurt yourself", yet the child continues to do it. Eventually the parent steps back. The child hurts themself and the parent waits to comfort the child but the child has learned a VERY hard lesson. If the child had listened in the first place; no pain would have been felt.