have a good thing going

have a good thing going

To be in a favorable situation, often financially. He doesn't need to work because he has a good thing going with all his rental properties.
See also: going, good, have, thing
Farlex Dictionary of Idioms.

have a good thing going

to have something of an ongoing nature arranged for one's own benefit. Sally paints pictures and sells them at art fairs. She has a good thing going, and she makes good money. John inherited a fortune and doesn't have to work for a living anymore. He's got a good thing going.
See also: going, good, have, thing
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

have a good thing going

Have matters arranged to one's benefit or profit. For example, Joe's got a good thing going with this new franchise. It also may be put as make a good thing of, meaning "make something work to one's benefit," as in If we work hard we can make a good thing of this job. The first term dates from the second half of the 1900s, the second from the early 1800s. Also see have going for one.
See also: going, good, have, thing
The American Heritage® Dictionary of Idioms by Christine Ammer.
See also:
  • good seed makes a good crop
  • fat city
  • neck and crop
  • on the high-road to Needham
  • at the best of times
  • wishcast
  • wishcasting
  • work itself out
  • backer
  • earn a living