Human life is divided into four stages and ashramas Viz., Brahmacharya, Grahastha, Vanaprastha and Sanyasa. The whole life span of 100 years is divided into these four stages each having 25 years. The purpose for this life planning is to attain the direct experience of Self-realization, yoga or enlightenment in life.

Brahmacharya: which starts from birth till 25 years is the time when students celebrate the time of youth for learning the foundation of lifestyle. The young man is expected to spend time and energy upon the attainment of education at the feet of a qualified teacher, and to observe sexual abstinence. There they learn how to lead a healthy and spiritual family life. Discipline and positive training were also very important parts of the Brahmacharya period. He should live simply and humbly, follow the requisite customs, fast and worship the gods. A student should study, practice penance and tend the sacrificial fire.

Grahasta: this stage starts from 25 years and lasts still 50 years. At this stage of grahasta ashrama or household stage, he is expected to marry, raise a family and participate in economically productive activity for the welfare of the society. He also fulfills worldly interests and duties. All religious and spiritual practices are done for others and services to mankind.

Vanaprastha: In this third stage say from 25-75 he is expected to partially retire from family life, detach him from worldly activities and concentrate upon the study of the scriptures and meditational practices. As a matter of fact this is the time for shifting focus more towards inner spiritual practices and prayer. One should maintain a simple lifestyle, and be in an isolated place for his practices.

Sanyasa: at this stage of Sanyashrama, which is regarded as last stage starts from 75 years to 100 years, he is expected to withdraw entirely from family life and become a sanyasi. He will leave all worldly affairs and concentrate only on spiritual goals. No social, political and professional engagements and one should live life in an effort to achieve salvation.

These four stages of life are even very much relevant in today`s world. Although not maintained in that significant way, yet, these four ashramas of life has made their presence felt in the modern context also. In the present day, few people find it practical to follow this system of life. First they study, which prepares them for an occupation, and then marry. This stage, with slight variations according to different individuals, continues for the rest of their life.