Your birthday is one of those days that Facebook (and social media in general) is most useful to you.
Today all kinds of people from all parts of your life come out of the woodwork to wish you well: your elementary school teachers, your youth pastor, your work friends from two jobs ago, and that guy you met at the Dungeons and Dragons meetup that one time.
Don’t just bask in the (admittedly nice) attention: use today to reconnect and nurture your “weak tie” (H/T to Reid Hoffman/Ben Casnocha) relationships. Done right, Facebook birthdays can be the 2018 version of a friends’ reunion. Everyone’s there, and it’s a good time to strike to keep relationships alive and growing.
When someone posts on your wall with “Happy birthday!”, you can rightly express gratitude and then go one step beyond: start a conversation, or else leave a meaningful message.
Tell your birthday well-wishers what they mean to you. Ask about a goal of theirs. Congratulate them on achieving or pushing toward a high aim. Turn these normal birthday Facebook wall comments into threads of interactions, jokes, remembrances.
Hold your own throughout, as you mix with all kinds of people with all kinds of ideas about who you are, and you’ll be just fine.