I tell my son, who is naturally shy, to find people into the same stuff as him. He plays guitar as well as many of the more famous rock guitarists, so I encourage him to hang with people like that. When he is around them there is a universal language between them. The conversations get as intense as they need to be. When he is in that zone, he is happy... I mean really happy... He has one friend, and when they see each other, they both light up. It is wonderful.
Everyone has something. Everyone is into something that umpteen zillion others are into, and that is common ground.
For me, all I know is found in books. The people I know who are the same way are about as riveting conversationalists as I am. We bore each other to death!!! LOL!!!
The conversations run to the usefulness of the DSM-IV TR as a reliable diagnostic tool, or debates over the ramifications of an anthropological find somewhere out in the New Mexico desert. Not what most people find stimulating conversation.
Find your kindred spirits. They are here, and many of them are treading water, just like you are. You will be amazing to them. A treasure.