Prakriti is one of the important parameters which is to be assessed before diagnosing and prescribing medicines. It is the inherent quality of a person; it refers to the physical & mental composition of individual. Prakriti is of two types, Shareerika (Dosha) and Manasika (Guna). Shareerika Prakriti is the predominant Dosha in a non-pathogenic state formed during conception. Satva, Raja and Tama are the three attributes which will also get intensified at that time and there by forming the Manasika Prakriti, exhibiting the psychic function of individual. These Trigunas are important impulses of the mind which distinguish individuals according to their psychological constitution. The three types of psyches are explained to be born from virtue, anger and delusion, and are considered superior, medium and inferior respectively. Depending on the predominance of the three Gunas, psychological characters are determined. Seven, Six and three respectively are the types of these psyche. Totally 16 types of Manasika Prakriti are described in Charaka and Sushruta Samhita. To plan the treatment, diet, therapeutics and sleep regimen, knowledge of this is necessary.