Comment by jf22

Maintaining and making new friends will become more difficult soon as the responsibilities of mid-life impact your peers.

Go deep into a single hobby that brings you intense joy and puts you in social situations. Don't dabble in a few and don't focus on ones you can do yourself.

Start connecting with people (like sending out birthday cards, celebrating milestones) and catching up with close friends or family more intentionally. Put effort into building and maintaining relationships.

Lastly, try and be a bit more unfocused. I tried too hard to live a "fulfilling" life in my 30s and felt like I spent a lot of energy and time on the wrong things.