What was the most significant moment in the history of Barney and Robin's professional lives on How I Met Your Mother?

How I Met Your Mother, an American sitcom, aired from 2005 to 2014. The show follows the main character Ted Mosby's quest to find true love in New York City. Barney Stinson and Robin Scherbatsky are two of Ted's closest friends and central characters on the show.

Barney Stinson, played by Neil Patrick Harris, is a womanizer and a corporate player who works at Goliath National Bank. Robin Scherbatsky, played by Cobie Smulders, is a Canadian journalist who eventually becomes a news anchor for World Wide News.

The most significant moment in the professional lives of Barney and Robin on How I Met Your Mother was when they both quit their jobs. In season 8, Barney realizes that he is unhappy with his job and decides to quit. Robin, who has just landed her dream job as a news anchor, also quits after realizing that she is still in love with Barney. This moment is significant because it leads to the couple's eventual marriage.