Maybe I don't need to share my whole self with every friend.
Maybe I can be funny and outgoing with one friend, and conservative and thoughtful with another, but still be authentic and real in both scenarios. We're all complex human creatures with many different needs and moods, so it makes sense that we don't give our whole selves to every person... or maybe any person.
Isn't that the joy of having friends? (multiple). Because one friend is hilarious and brings out my silly, outgoing side. Another friend is passionate and thoughtful, who brings out those qualities in me. With some friends I talk deeply and seriously about personal growth and the state of the world. With other friends I just giggle and gossip about boys. Neither is more important in my life. They're both scratching an itch in my heart or my mind, just in different spots.
I needn't worry about "being myself" as a single concept, because it's rarely just one thing. One friend might see me with another friend and barely recognise me because I seem different. Because I am different. But still the same. You know?
Maybe I speak louder or laugh more. Maybe I seem grumpier and don't smile as much as I normally would. Maybe I'm more sarcastic or more adventurous, or even have a slight English accent that came from who knows where (this happened once).
But I'm still me. I'm just in another part of my being. Scratching a different itch. It's not about hiding my true nature or being dishonest. It's about sharing and exploring the part of myself that is inspired by that particular friend. To learn from each other and feel part of something lovely and meaningful.