Research at two universities (by Professor Sonja Lyubomirsky, and by Professor Laura King) has shown this small investment of time can make a significant difference in your life.

FORBES: Do You Know How To Mix Happiness And Business?

Bush will host King's family at the White House, while first lady Laura Bush plans to visit King's hometown of Atlanta, Georgia.

CNN: Bush calls education 'civil rights issue of our time'

On Wednesday, CNN's John King interviewed Laura Bush and asked her opinion on the anthem controversy.

NPR: First Couple Divided Over National Anthem

Her records in the early '70s received critical acclaim, drawing comparisons with such well-known contemporaries as Joni Mitchell, Carole King and Laura Nyro.

NPR: Judee Sill's Posthumous 'Dreams'

He appeared on recordings by Clarence Carter, Wilson Pickett, Aretha Franklin, Boz Scaggs, King Curtis, Lulu, Laura Nyro, Herbie Mann and many others.

WSJ: A Duane Allman Deep Dive

CNNMexico.com, journalist Salomon Kaufman, Laura Reyes, and CNN's Jessica King, Alexander Hunter, Catherine E.

CNN: STORY HIGHLIGHTS