Clinical Psychologist Marcus Lewton with a letter to the adolescent who is frightened by their own mind.
03 August 2026
To every adolescent who has sat across from me and asked, "What if this thought means I'm bad?", and to every one of you I have not met yet.
People will have told you that adolescence is difficult. They will have told you about hormones, friendships, exams, and all the uncertainty that comes with growing up. But there is something they rarely mention.
Intrusive thoughts.
Thoughts that appear out of nowhere and stop you in your tracks. Thoughts that jar you, frighten you, make you question yourself. Sometimes they are not thoughts at all but images, of things you never wanted to picture.
At first they might have seemed ridiculous. You brushed them aside. You laughed at them. Perhaps they stayed a while and drifted into the background. Then, somehow, they stopped drifting. Maybe it was gradual. Maybe it felt like an explosion.
They began taking up more space in your day. You stopped enjoying the things you used to enjoy. Maybe you found yourself tapping a table, repeating phrases in your mind, asking people for reassurance, or confessing things that did not need confessing. Anything that made the anxiety ease, even for a few moments. You got good at hiding it, carrying out the compulsions without teachers or friends or parents noticing. It felt safer that way. Less embarrassing.
The first thing I want you to know is this.
You are not alone.
I also know what your OCD is probably saying as you read these words.
"Yes, but mine is different."
"You don't understand mine."
"These words don't apply to me."
They do. OCD has a remarkable ability to take your own intelligence and turn it against you.
If your intrusive thoughts or images are violent, sexual, blasphemous or simply disturbing, OCD begins asking questions no young person should ever have to answer. What if this thought means something about me? What if I secretly want this? What if I am actually a bad person? What if this is showing me who I will become?
Sometimes those questions alone are enough to make you want to hide in your bedroom and never come out.
So let me answer the question at the top of this letter as plainly as I can.
Almost everybody has thoughts like these. Most people notice them for a second, find them unpleasant, and let them pass. The difference is not the thought. The difference is what happens next.
And there is something else, something OCD will never tell you. It does not attach itself to things you do not care about. It goes for what matters most to you, and takes the shape of whatever you would least want to be. That is why it hurts as much as it does. If you were the person the thought accuses you of being, it would not frighten you.
The fear is not evidence against you. It is evidence of exactly who you are.
The shame feels real. The guilt feels real. But they are not yours to carry. They belong to the OCD.
One of the most important things I have learned, after years of working with adolescents from all walks of life, is that OCD creates a relationship with you that you never asked for.
For some people it behaves like a bully. It threatens catastrophe unless you obey, and you become frightened of not listening, or even of saying it out loud in case that makes things worse. For others it pretends to be a protector, convincing you it is only keeping you safe.
Either way, it hands you responsibilities no human being could carry. It tells you someone might die unless you perform a ritual. It tells you that if you do not repeat something enough times, something dreadful will follow, and it will be your fault.
Deep down you know that is not how the world works. But OCD does not care what you know. It wants you to feel responsible.
Life already feels uncertain at your age, and OCD hijacks that uncertainty, convincing you that certainty is something you have to achieve. So everything starts having to feel right. Walking, eating, breathing, entering a room, leaving it. Sometimes your own mind becomes the thing you fear most.
Whatever form it takes, it is not telling you the truth about who you are.
You ask the people you love for reassurance because for a few moments it quietens the fear. But the relief never lasts, and you find yourself asking again. And again. You start noticing the frustration in the people around you, not because they do not love you, but because they are frightened too. Then the guilt arrives, and the shame with it. You begin wondering whether you have become a burden. You start feeling disconnected from your friends, your family, and eventually from yourself.
That loneliness is one of OCD's favourite places to work. It grows louder when you are on your own, not because it is your friend, but because there is nobody there to answer back.
But it is still a relationship you never asked for. And relationships can change.
I want to tell you about a young person I sat with once. They came into the room and they cried. That was the whole session. They could not get the thoughts into words, and I did not ask them to. We sat there together while it happened. There was hopelessness in that room and I felt it too. But there was something else, and it took me a while to name it.
Nothing had been done. No ritual, no checking, no confessing, no asking me whether they were a bad person. The thoughts had arrived, and they had been unbearable, and they had been survived anyway. At the end of the hour that young person stood up and went home.
That is what recovery is actually made of. Not the thoughts stopping. The discovery that when they arrive, nothing has to happen next.
I have also sat with a young person certain they needed to be admitted to a hospital ward, because they had become too dangerous to be out in the world. They had done nothing. Nothing whatsoever had happened. They had had thoughts, and the thoughts alone had convinced them.
I watched that young person recover. Not overnight, and not easily, but steadily. Life slowly got bigger again. Friends came back. Confidence came back. Hope came back.
The first step is getting the right help. You will probably spend time on TikTok, Instagram, YouTube or Reddit looking for answers. Some of it will help. Some of it will frighten you, and some will leave you convinced you will never recover. Please do not let an algorithm decide your future. Find someone who genuinely understands OCD.
That can feel terrifying, because good treatment will eventually ask you to do the thing that feels impossible. It will ask you to have the thought, or the image, or the urge, and then not do what OCD demands afterwards. For a while your anxiety may be higher than it has ever been. You may feel worse before you feel better. That is frightening. It is also how recovery begins.
Telling somebody is the hardest part and the part that changes things. A parent, a GP, a teacher you trust. If you cannot say it out loud, write it down and hand it over. And if things ever get dark enough that you are frightened of what you might do, tell someone that day. Not tomorrow. That day.
If it helps, give this letter to a parent. They are often just as lost, and just as frightened of saying the wrong thing. There is help for them too.
I am not going to pretend any of this is easy. OCD will keep trying to convince you that you are the exception. That your thoughts are different. That you really do want the things you fear. Some days it will tell you none of this is OCD at all. Other days that you are better now and no longer need help.
OCD lies. It is extraordinarily good at lying.
There will be days when it convinces you that your future has disappeared. Do not believe it.
You are not dangerous. You are not broken. You are not alone. You are a young person living with OCD, and that is something that can be treated. One day these thoughts will no longer decide how you spend your day. One day they will no longer tell you who you are.
One last thing. You may find yourself coming back to this letter, reading it again, looking for the line that settles it. That is the OCD, and coming back to me is feeding it. Let my words stick if they are going to stick. There is no need to read this twice. Nothing changes here.
Everything changes out there, with somebody who understands OCD, when you let them help you change a relationship you never asked for.
MarcusMarcus Lewton is author of Intrusive Thoughts and Compulsions in Adolescent OCDA Psychoanalytic Framework for Treatment, published by Routledge.
SOURCE:
https://www.bps.org.uk/psychologist/what-if-thought-means-im-bad(accessed 11.8.26)
