joy vs self-indulgence

joy

noun
  • A feeling of extreme happiness or cheerfulness, especially related to the acquisition or expectation of something good. 

  • Anything that causes such a feeling. 

  • Luck or success; a positive outcome. 

verb
  • To feel joy, to rejoice. 

self-indulgence

noun
  • Excessive or immoderate indulgence of one's own personal desires and needs above all others. 

How often have the words joy and self-indulgence occurred in a corpus of books? (source: Google Ngram Viewer )