Are you still friends with any of your childhood friends?
I have a handful of friends from grade school that I keep in touch with 3 or 4 times a year. College is where I met my nucleus. I know I'm lucky in this regard but I have a group of 7 friends that all talk constantly via groupme. About every 2 years we take a trip (mancation) together sans wife and kids. I could, and do, pick up the phone at any time and call any of them.
Friendships are incredibly important and men tend to neglect theirs. Without going into PSA mode, I'd urge everyone, the guys especially though because we're so bad at it, to reconnect with friends. Men are more likely to carry the burden of stress and anxiety alone. Pick up the phone. 99% of the time, if you call someone out the blue, they’re going ecstatic to hear from you. You will have made their day and it's an easy guaranteed dopamine boost for you. Try it. Get those friendships back.