You're going to have to let them go. You've simply out grown them. While on this journey, I've had to let friendships of 10-14 years go. Because there isn't anything more important to me than Personal Development. I would cut my own Mom off if I had to. Make a list of all the qualities you would like in a friend (What they look like, How they dress, Their interest, ETC) make it very detailed. And while going to events, or doing hobbies that you love, they will automatically start coming your way. It's crazy.