I think I have a good mix of friends from when I was young and friends I made as an adult. My very best friend I only met 5 years ago and yet we call each other for everything.

If you can get to activities that helps. I pole dance and have made a bunch of awesome friends through it. I also join local face book groups and have made friends there. Volunteering is another great way to meet people. I think the key is finding people who share a passion for the things you do.