not do (someone or oneself) any favors

not do (someone or oneself) any favors

To be problematic or detrimental to someone or oneself. A noun, pronoun, or reflexive pronoun can be used between "do" and "any." I knew that I had to get up at 4 AM today, and I didn't do myself any favors by staying up late last night.
See also: any, favor, not
Farlex Dictionary of Idioms.
See also:
  • buy (yourself) time
  • buy time
  • identify with
  • orient
  • orient to
  • orient to (something)
  • spiff up
  • spiffed up
  • ask back
  • interpret for (someone)