ambition vs go for it

ambition

verb
  • To seek after ambitiously or eagerly; to covet. 

noun
  • Eager or inordinate desire for some object that confers distinction, as preferment, honor, superiority, political power, or fame; desire to distinguish one's self from other people. 

  • An object of an ardent desire. 

  • A personal quality similar to motivation, not necessarily tied to a single goal. 

  • A desire, as in (sense 1), for another person to achieve these things. 

go for it

verb
  • To put maximum effort into achieving something. 

  • To decide to do something; especially after a period of hesitation. 

  • Used to grant permission for or to give endorsement of a suggestion or proposal. 

How often have the words ambition and go for it occurred in a corpus of books? (source: Google Ngram Viewer )