Enjoy success, as in He's been riding high ever since they made him vice-president. The high here alludes to both elevated and elated status. [First half of 1800s]
Words nearby ride high
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.