Working out what needs to change is the easy part of changing your culture. The hard part is getting time with someone senior enough to back it, and not losing them.
You know what needs to change. You’ve probably seen it for months, in the same recurring complaints, the survey comments, the same people leaving for the same reason. Then you find yourself with a short window with somebody senior enough to act, and the message just doesn’t get through.
This is where I often see culture change stall. Usually the plan is fine, and the exec team has the appetite. It stalls in a conversation where the person carrying the idea and the person who could resource it stand in completely different corners of the room (mentally) and nobody notices.