Become aware of aversion, the arising of negative feelings toward something or someone. These could be mild feelings, such as irritation, or strong feelings, such as anger and hatred. Try to see what happened just before the aversion arose. What sense impressions occurred — sight, sound, touch, taste, smell, or thought? When does aversion first arise during the day?

Jan Chozen Bays in How to Train a Wild Elephant and Other Adventures in Mindfulness