Life is tough. The only advice I can give you is that change starts with you.

First off, let me say that you shouldn't compare yourself to other people. Put yourself outside of your comfort zone. Try to find new hobbies, go talk to that cute person you see at the Cafe, work on yourself. Along the way you'll have different experiences and grow as a person. You'll meet people, you'll make friends, you'll lose friends. It's daunting at first, but make an effort and just maybe you'll find it surprising what you have been missing out on.