Title: Dying Inside
First published: May 12, 1980
Description: From the back cover:

David Selig is outwardly unimpressive.  His early promise as a student and scholar is unrealised.  He has no proper job, he has no girlfriend.  But, inside, Selig has the power of a god, for he can probe other people's minds and read their thoughts and feelings.  This extraordinary faculty defines his sense of self -- his power is *him*.  But with the onset of middle age, Selig's capacity to read minds is failing fast, and he must struggle to come to terms with that loss -- to accept that he is dying inside...
Subjects: Fiction, general, Fiction in English, Fiction, Science Fiction, American Science fiction, Telepathy