Answer:
integrity.
Explanation:
According to the last stage (integrity vs despair) of Eric Erikson's psychosocial development theory, individuals who feel that they did not achieve anything in life or get to their goals begin to have a feeling of despair and depression. On the contrary those who feel satisfied with their life choices develop a feeling of integrity. This stage of development starts in mid 60s till the end of life. Abner is in this stage and is experiencing the feeling of despair.