look forward to vs take heart

look forward to

verb
  • To anticipate, expect, or wait for, especially with a feeling of approval or pleasure. To be excited or eager to. 

take heart

verb
  • To be courageous; to regain one's courage. 

intj
  • Used when encouraging someone to bear or take up a difficult situation. 

How often have the words look forward to and take heart occurred in a corpus of books? (source: Google Ngram Viewer )