Intriguing/Mysterious:
* The summer I turned sixteen wasn't what anyone expected, least of all me.
Humorous/Self-deprecating:
* My teenage years were a masterclass in awkwardness, punctuated by moments of surprisingly profound realization (mostly accidental).
Reflective/Nostalgic:
* The scent of rain on hot asphalt still takes me back to those long, hazy summer days of teenage freedom.
Dramatic/Confessional:
* Everything changed the day I received that letter, a single sheet of paper that irrevocably altered the course of my teenage life.
Direct/Informative:
* Teenage life, as I experienced it, was a whirlwind of academic pressure, social anxieties, and the exhilarating discovery of self.
The best hook will depend on the specific story you want to tell. Consider what makes your teenage years unique and choose a hook that reflects that.