An Introduction to Autism for Young Adults and Late Teens
The moment after a teen hears the word autistic about themselves, there’s usually a long pause. A flood of unspoken questions. Does this change who I am? What does it mean for school? For friendships? For my future? Do I even want this label?
And often, sitting across from them, a parent who doesn’t quite know where to start the conversation either.
So, I’m Autistic by Sarah O’Brien is the book that finally writes that conversation down: in a young autistic voice, for young autistic readers, with everyone else welcome to read over their shoulder.
Why this book matters
Most "introduction to autism" books are written by clinicians, therapists, or parents. They’re useful, but they’re explaining autism from the outside in. Sarah O’Brien’s book does something different. It’s written by an autistic adult who was diagnosed at 18, in her own voice, for the teen or young adult who is sitting where she once sat.
That perspective changes everything. The tone isn’t clinical. It isn’t reassuring-in-a-careful-way. It’s honest, funny, sometimes blunt, and deeply respectful of the reader’s own capacity to figure out what autism means to them.
About the author
Sarah O’Brien is a young autistic researcher and advocate. She was diagnosed as autistic at age 18, and has been working in autism and disability research since 2015 and with autistic children and young people since 2016. She writes from a deliberate blend of personal experience and professional knowledge, and her introduction sets the tone for the whole book: "Trust me, you’re in safe hands."
What the book covers
The book is structured in three parts. Part I: Understanding Autism covers what autism actually means, the myths and stereotypes that get in the way, the strengths and differences that come with neurodivergence, and the question many young people wrestle with: do I need to tell people I’m autistic?
Part II: Thriving while Autistic is the longest section and the one most teens and parents say felt the most useful. It moves through mental health, physical health, transitions and change, friendships and relationships, home life, society, and the move into employment.
Part III: Finding Out More brings it home with conclusions, things to listen to, things to read, a glossary, and a full reference list, so the reader has a clear next step waiting whenever they’re ready for one.
For autistic teens and young adults
If you’re a teen reading a book about autism for the first time, this one will feel different from the rest. Sarah doesn’t talk down. She doesn’t assume you need to be fixed. She writes from the perspective of "I figured out how to live with this, and here’s what I wish I’d known earlier."
Topics that often go unspoken in adult-written autism books sit front and centre here: masking, burnout, social exhaustion, the energy cost of "passing", the relief of finding your people, the small daily wins. For a teen, this might be the first book where another autistic person actually says it out loud.
"Trust me, you’re in safe hands."
Sarah O’Brien, in the book’s introduction
For parents
If you’re a parent of a recently diagnosed teen, or a teen who is starting to wonder if they might be autistic, this is the book you put on their shelf and let them come to in their own time. You can also read it yourself, quietly, to better understand what your young person might be feeling but not yet able to put into words.
Sarah’s voice is generous toward parents, but she doesn’t soften the harder parts. She talks plainly about the moments when adults in an autistic teen’s life have made things harder rather than easier, and what would have helped instead. It’s the kind of book that gives parents a window without making them feel attacked.
For educators
Teachers and school counsellors will find Part II especially useful. Sarah is direct about what masking looks like in the classroom, why a "quiet, well-behaved" autistic student might be drowning behind the calm, and what small accommodations actually shift the dial for autistic learners. Reading this book changes how you look at the autistic students in your class, and at the ones you suspect might be, but haven’t yet been diagnosed.
What we love most
Sarah’s voice is the magic of this book. She writes like a slightly older friend who happens to have been through everything the reader is about to walk into, and is willing to tell you the honest version. It’s funny without being flippant. It’s serious without being heavy. And it carries a quiet message all the way through: you are not broken; you are wired differently, and that’s allowed to be a good thing.
The bottom line
If a young person in your life has just been diagnosed,
or is starting to wonder, this is the book to put in their hands.
Sarah O’Brien has written the introduction to autism that autistic teens and young adults have been waiting for. It’s strengths-based without being saccharine. It’s honest without being heavy. And it treats the reader like a whole person with their own life to figure out, not a problem to be solved.
You won’t finish this book and feel like autism is "explained". You’ll finish it feeling like someone trusted you to figure it out for yourself, and gave you the map. 🤍