# Secrets of Adulthood

> Reflections on self-knowledge from New York Times bestselling author Gretchen Rubin.

- **Platform:** substack
- **Category:** Lifestyle
- **Subscribers:** 101K
- **Paid subscribers:** 9K
- **Weekly growth:** +0.5%
- **Monthly growth:** +0.9%
- **Last updated:** 2026-06-12
- **URL:** https://secretsofadulthood.substack.com
- **Profile:** https://newsletterinsights.io/newsletter/secretsofadulthood