agony aunt

noun2

1. •
   (UK, informal) Someone commonly consulted for advice about personal problems.

   • I'm sick of everyone coming to me with their problems—I never wanted to be an agony aunt!
2. •
   (UK, informal) Synonym of advice columnist, a writer of an advice column in a newspaper or other periodical, especially an actually or assumed female writer of such a column.

   • You should write in to the agony aunt; she'll sort it out for you.