Sometimes people look back on years of feeling different, overwhelmed, disorganised, intensely focused, ashamed or misunderstood and wonder whether a diagnosis might explain it. Late recognition can bring many feelings: curiosity, relief, grief, anger, uncertainty or none of these. A blog cannot diagnose ADHD or any other condition, explain a person’s history, or say whether an assessment will provide a clear answer. ADHD is a neurodevelopmental condition that requires appropriate assessment. It should not be self diagnosed from a personal story, a list of traits, a social media post or a difficult period. Similar experiences can arise in different contexts, including anxiety, low mood, sleep disruption, trauma, physical health, practical pressures, neurodivergence and ordinary variation. A later assessment can still be meaningful, but it is not a measure of whether someone deserved help sooner or whether the past should have looked different. It can consider history, functional impact, health information, strengths, current support and other explanations. It may also leave some questions open. CBT may be considered after assessment where appropriate. It is not a substitute for diagnosis, medical advice, workplace advice or medication conversations. Where CBT informed work is suitable, it is developed collaboratively with a qualified clinician and adapted to the person’s goals, capacity, sensory needs and circumstances. There is no promise that therapy will produce a particular diagnosis, feeling or outcome. Support may involve a GP, a specialist assessment service, occupational health, workplace or education support, practical adjustments, trusted people, medication discussions or rest. No single pathway is right for everyone. For related information, see neurodiversity affirming support at lyceumclinic.co.uk/cbt for neurodivergent people/, the guide to CBT informed support for neurodivergent adults at lyceumclinic.co.uk/guides/cbt support for neurodivergent adults/ and the ADHD assessment guide at lyceumclinic.co.uk/guides/adhd diagnosis west london/. If distress includes crisis, thoughts of self harm or an inability to keep safe, urgent appropriate help is needed.