Self doubt at work can sound convincing: perhaps a success was luck, a mistake will expose everything, colleagues know more, or one difficult meeting proves a person does not belong. “Imposter syndrome” is a widely used phrase, not a formal diagnosis. A blog cannot decide whether self doubt is related to anxiety, low mood, burnout, trauma, discrimination, a difficult workplace, a health concern, a practical problem or something else. The pressure can be especially sharp when standards are unclear, feedback is inconsistent, a role is new, responsibilities are changing, someone feels isolated or the workplace is demanding. But it is important not to turn a work pattern into a fixed personal story. Feeling uncertain does not prove that someone lacks ability. Equally, it does not mean every concern about workload, performance, treatment or safety should be dismissed as a distorted thought. Assessment can make room for the full context: what happened, what thoughts and emotions followed, whether there are physical symptoms that need medical attention, what support exists, what expectations are reasonable and whether another issue requires specialist advice. This article is not medical, employment, legal, occupational health or HR advice. CBT based therapy may be considered after assessment where clinically appropriate. It can provide a structured way to explore the links between self criticism, behaviour, emotions, relationships, workplace demands and values. It cannot guarantee confidence, secure a promotion, resolve discrimination or replace support from an employer, union, occupational health service, HR professional, GP or legal adviser. Where behavioural work is appropriate, it is planned collaboratively with a qualified clinician. A blog is not a self directed instruction to volunteer for a feared task, disclose private health information, ignore unsafe conditions or test colleagues’ reactions. The pace and focus need to fit the person’s safety, capacity, goals and workplace circumstances. It may help to bring one moment of doubt to a conversation: the situation, the evidence that felt important, the response in the body, what happened next and the support that was available. This does not establish a diagnosis or a single explanation. It can help identify a more useful question. For related information, see anxiety support at lyceumclinic.co.uk/therapy/anxiety/, burnout support at lyceumclinic.co.uk/therapy/burnout/ and the guide to imposter feelings and CBT at lyceumclinic.co.uk/guides/imposter syndrome cbt guide/. If distress includes crisis, thoughts of self harm or an inability to keep safe, urgent appropriate help is needed.