Don’t look at it; it is the mind’s projection. Don’t look at it because it creates more reaction; it is not real; it is the projection of the disliking mind. Watch the disliking, or other objects. So, don’t pay attention to it. Whenever the mind goes to that object, bring it back.
If you sit with it for months, it takes months to undo it.
[Note: The above is Sayadaw’s advice to a yogi in another retreat]