"How do I deal with imposter syndrome at work?"

First, know that you're in excellent company. Most successful people feel this way at some point. That voice saying 'they'll figure out I don't belong here' is lying to you. What helps: Keep a 'wins' document. Every compliment, every successful project, every problem you solved - write it down. Read it when the doubt creeps in. Also: you were hired. Someone looked at many candidates and chose YOU. They weren't doing you a favor - they made a business decision. The uncomfortable truth? You might always feel a little like an imposter. That's not a bug, it's a feature - it means you care and you're still growing. The goal isn't to eliminate the feeling, it's to act despite it.