Feeling like your success is a fluke, like you've somehow fooled everyone and it's only a matter of time before they figure it out: this pattern is remarkably common, particularly among high achievers, but knowing that doesn't make it any less exhausting to live with. The persistent background anxiety that you don't actually belong where you are can colour everything from how you approach new challenges to how you receive genuine praise.
Working through imposter syndrome in therapy often starts by looking at where these beliefs took hold and what keeps reinforcing them. From there, you'd work on recognizing the difference between accurate self-assessment and a distorted internal critic, and building more grounded ways to acknowledge your own competence. Cognitive restructuring, self-compassion practices, and realistic goal-setting are all part of developing a more honest and kinder relationship with your own abilities.