Starting over professionally often means carrying experience into a room where nobody has seen it yet.

Beginning again does not empty you out; it removes the shorthand. In the old place, people knew what you were good at without being told. In the new room that history is invisible, so competence has to be demonstrated rather than assumed, and the early weeks can feel like proof that you lost something. What you lost is reputation, which is rebuilt, not ability, which came with you.

Expect the first months to be slower than your skill suggests, and treat that as normal rather than as evidence. Do one visible thing well and let it introduce you.