Be Happy (Mary J. Blige song)

"Be Happy" is a song by American singer Mary J. Blige. It was written by Blige, Sean "Puffy" Combs, Arlene DeValle, and Jean-Claude Olivier from duo Poke & Tone for her second studio album, My Life (1994), while production was helmed by Combs and Olivier. "Be Happy" contains an instrumental sample of the song "You're So Good to Me" (1979) by musician Curtis Mayfield and a re-sung vocal portion of the record "I Want You" (1976) by Marvin Gaye.

The song was released as the lead single from the album in October 1994 by Uptown and MCA Records. It reached number 29 on the US Billboard Hot 100, while reaching number six on the Hot R&B/Hip-Hop Songs, becoming her fifth top-ten single on that particular chart, and number thirty on the UK Singles Chart. Upon its release, Blige performed the song on Friday Night Videos, The Tonight Show with Jay Leno, Soul Train, Teen Summit, and Showtime at the Apollo among others.