As with breathing, the mindset is essential in the practice of Zen meditation. The right state of mind emerges naturally from a deep concentration on the posture and breathing. During zazen, it is normal to have images, thoughts and emotions coming up to the surface, appearing from the unconscious mind. Do not pursue them or fight escape from them. The more you try to get rid of them, the more attention you give them, and the stronger they become. Try not to attach to them. Just let them go with.