This article was automatically translated from the original Turkish version.
Human development, cognitive structure, and lifestyle are largely influenced by the people around them. The saying “A person is the average of the five people they spend the most time with” draws attention to the decisive role of an individual’s social environment. This expression is attributed to Jim Rohn, one of the leading names in personal development and success. Rohn, a speaker renowned for his work in motivation and personal growth, used this phrase to emphasize the need for individuals to consciously choose their social surroundings in order to foster self-improvement.
Social relationships have a strong influence on an individual’s values, beliefs, and behavior patterns. The people in one’s environment shape their thought processes while also influencing the formation of their habits and goals.
As a social entity, a person is in constant interaction with their surroundings. This interaction leaves deep imprints on personal development and world outlook. The lifestyle, values, and habits of those around an individual encourage similar tendencies in them. This situation shapes the individual’s learning process from an early age and continues to influence identity and target formation during adulthood.
The psychological foundations of this concept can be examined within the frameworks of social learning theory, group dynamics, and cognitive psychology. Albert Bandura’s Social Learning Theory argues that individuals learn through observation and model the behaviors of those around them. According to Bandura’s research, individual together time individuals tend to internalize the thought patterns, emotions, and behavioral habits of those they interact with.
Cognitive consistency theories suggest that individuals strive to maintain internal balance by adopting similar value and attitudes as those in their environment. Research by Nicholas A. Christakis and James H. Fowler demonstrates that social networks significantly affect individuals’ happiness, health, and financial status. Harvard University’s long longitudinal happiness studies have shown that an individual’s interactions with their environment directly influence their long-term welfare levels.
Additionally, a experiment conducted at Stanford University revealed that individuals can alter their moral and ethical decisions based on the groups they belong to. Research findings indicate that participants, when included in specific groups, gradually adopt the group’s values and shape their decisions accordingly.
Robin Dunbar’s Dunbar's Number Theory posits that the human brain is limited in its capacity to maintain stable social relationships. According to Dunbar, the maximum number of individuals with whom a person can form strong bonds is approximately 150. However, this number is divided into distinct social layers, with the suggestion that an individual can form deep connections with no more than five people.
These are the most trusted individuals with whom the strongest emotional bonds exist. They directly influence an individual’s thought patterns, decisions, and behaviors.
Composed of friends whom the individual frequently interacts with and who provide social and emotional support.
Work acquaintances, people known to the individual, and those with whom certain connections are maintained.
According to this theory, while an individual forms deep bonds with at most five people, the behaviors and thought patterns of these individuals largely determine how the individual perceives themselves and how they develop.
Throughout history, wisdom traditions have emphasized the importance of carefully selecting one’s environment. These teachings explain how the choice of friends and social circles can shape a person’s character and moral development.
In Quran-ı Kerim, Furkan Sura, verses 27–29, it is stated: “That day tyrant person will bite their hands and say, ‘Oh, if only I had taken the same path as Prophet!’ ‘Woe to me! If only I had not taken friend as a friend. Indeed, after Law a came to me, they led me astray from him.’ Satan, thus, leaves a person in such a state.” This highlights the direct impact of bad companionship on the individual.
In Proverbs 13:20, it is said: “Whoever walks with the wise becomes wise, but the companion of fools suffers harm,” drawing attention to the influence of one’s environment on the individual.
Buddhist texts emphasize that for an individual to attain enlightenment, they must spend time with those who foster growth, possess good intentions, and are oriented toward wisdom.
Mevlana emphasized the influence of environment by saying, “Pay attention to whom you walk with; even a rose among thorns smells of thorns.” Yunus Emre also frequently underscores the importance of choosing friends for spiritual development.
People are significantly influenced, often unconsciously, by those around them. Particularly, the workplace, family relationships, and social environment directly shape an individual’s thought patterns. For example:
In the professional world, successful individuals are commonly observed to maintain close relationships with other successful people. Those who work alongside highly motivated, entrepreneurial individuals tend to develop a similar understanding of success. Conversely, an unproductive work environment and a consistently complaint team can reduce an individual’s performance and motivation.
Academic performance can be directly influenced by the friend groups an individual associates with. Students who spend time with peers who have strong study habits and focus on academic achievement tend to develop more disciplined study behaviors.
Family members are among the most important factors in shaping an individual’s perspective on life and character development.
Conscious social choices and the creation of positive environments play a critical role in improving an individual’s quality of life.
An individual’s social environment is one of the fundamental factors shaping their character and decisions. Research in social psychology and sociology demonstrates that the thought patterns, lifestyles, and habits of the people surrounding an individual are decisive in their personal development process. Therefore, consciously selecting one’s environment is regarded as a factor that directly affects quality of life.
Effects of the Social Environment on the Individual
Psychological Explanations and Scientific Studies
Dunbar’s Number and Social Connections
Closest Circle (Five People)
Close Circle (Fifteen People)
Broader Social Environment (50–150 People)
The Importance of Environment in Sacred Texts and Ancient Teachings
The Qur’an
The Torah and the Bible
Buddhist Teachings
The Teachings of Mevlana and Yunus Emre
The Influence of Environment in Daily Life
Workplace
Educational Life
Family and Close Circle

