Changing organisational culture involves an intentional and committed approach, with everyone to be pulling in the same direction. It’s important to have a really clear vision about how you want the culture to be.
You’ll want to understand the current culture and identify your areas of focus. Creating a clear vision might involve reviewing your organisational values (or creating a set if you don’t already have them) and looking at the behaviours that underpin those values.
Then you can get going with a programme of work to start making the necessary changes. This might include training programmes, in-depth work with leaders, looking at working conditions and practices and plenty more.