How do I go about making new friends anyway?

So I've been cutting out the negative people out of my life lately ( drunk every night, part hipsters, no clue what it is to live on their own and not have mommy and daddy pay rent) in hopes to better myself, and become an adult. The only problem- meeting new people. In the past I only had any type new social interaction at a party, 40 in hand, and felt great. Now, I'm just confused about meeting sober people who are ready to get over the damn party. Any suggestions?