The Mind and how we think. Our nervous system, the mental pathways of our five senses.
How we use the language and how it(specific words and phases) mirror our mental world and affects us. Linguistic also refer to our silent language i.e. our non-verbal behavior like our postures, gestures, beliefs, and habits that reveal our thinking style.
How we sequence our actions to achieve our goals. It suggests that our thoughts, feelings, and actions are simply habitual programs that can be changed by upgrading our mental software(programming is borrowed from computer science)