Answer:
13-19 years old.
Adolescence.
Step-by-step explanation:
Adolescence (13-19 years of age) is the age group where the individual has a great psychological development and begins to build his own image, creating his identity, changing the relationship with his parents, creating a strong individualism that will be totally connected to a proper and fickle identity.
This strong sense of indivudualism and the search for identity is generally the main factor in the malaise and the feeling of not fitting into the society that adolescents feel during this phase of psychological development.