I'm the same and also wondering how. At work for instance I know a few people but find it hard to develop into a proper friendship. Whereas others seem to manage this with ease. I think for me, being a listener is good but you also need to share as well. I find I'm too scared to share things because I'm busy concentrating on how I am perceived. I worry I will bore the person. Because of this though nobody knows anything about me, or very little! I think friendship is about give and take, but it is more difficult as an adult. I totally agree!