Seek psychological or philosophical books related to role identity.
Involving developmental psychology and social psychology, there are classic bibliographies in this field, such as Social Psychology, Yu Guoliang Beijing Normal University Press (published in August 2006) and Ode to Lifelong Development Psychology. K.sigelman, Elizabeth A.Rider, Chen Ying and Beijing Normal University Publishing Group. Beijing Normal University Press (published in February 2009), Zhang Houcan's Modern Psychology and Education Statistics, Xu Jianping Beijing Normal University Press (published in 2009-0 1), etc. I hope it works.