Self-esteem was lowest among young adults but increased throughout adulthood, peaking at age 60, before it started to decline. These results are reported in the latest issue of the Journal of Personality and Social Psychology, published by the American Psychological Association. There is no definitive answer to this question as it depends on a person's individual experiences and opinions. However, some experts in the field of psychology believe that the age group with the lowest self-esteem is young adolescents. This is likely due to the fact that teenagers are just starting to develop their own identities and sense of self-worth, which can be difficult when compared to adults. Additionally, many young adolescents experience setbacks and difficulties during their developmental process, which can lead to feelings of self-doubt and insecurity.