It is often said that awakening is awakening as that which never changes. The content of what is happening always changes, but … (space, pure awareness, the formless unborn etc.) is always here now. The content is fluid and always changing, but the context is distinct from change.
There is another aspect to awakening, and that is that what is included in the experienced changes. In a way, it is the only thing that changes.
What happens is that the experiencer (a) brings itself in as the experienced (aware of itself as awareness), and then (b) finds itself as the experienced no matter what that is (trees, emotions, thoughts, etc).