come a long way

come a long way

To make significant progress. Almost always used in the present perfect tense ("has come a long way," "have come a long way"). He can play entire songs now, and they sound pretty good! He's really come a long way from when he could barely hold a guitar.
See also: come, long, way
Farlex Dictionary of Idioms.

come a long way

Make considerable progress or improvement, as in That's good, Rob-you've certainly come a long way. This usage, which transfers the "distance" of a long way to progress, gained considerable currency in the 1960s and 1970s in an advertising slogan for Virginia Slims cigarettes addressed especially to women: "You've come a long way, baby."
See also: come, long, way
The American Heritage® Dictionary of Idioms by Christine Ammer.
See also:
  • here/there (one) goes again
  • had one's fill
  • have (one's) fill (of something)
  • have had your fill of
  • have had your fill of somebody/something
  • have had your fill of something
  • all wound up
  • not have all day
  • recuperate
  • recuperate from