How do I ask for accommodations at work without hurting my career?

The fear is understandable. You need something to do your job well, and asking for it feels like admitting a weakness that could be held against you. Sit with the truth underneath that fear, though. An accommodation is not a favor that makes you lesser. It is the thing that lets your real ability show. You are asking to do better work, not less. Most of the harm we dread lives in our imagination, larger than it turns out to be. That does not make the risk zero, but it means you are probably judging yourself more harshly than others will. Frame the request around results: here is what I need, and here is how it helps me deliver. That is a professional ask, not a confession. Start small if the whole thing feels too big. Ask for one concrete thing, from one person you trust most, and see how it goes. One good outcome will quiet a lot of the fear, and you will have proof to lean on for the next time.