He often reflects on his own upbringing and its impact on his values.

upbringing 是由动词 bring up（抚养、养育）加上前缀 up-（表示"向上"）和名词后缀 -ing 构成的名词。bring up 指"抚养孩子长大"，upbringing 则指"一个人从小受到的抚养和教育方式"，即"成长经历"或"教养方式"。