This song is basically saying that all you really need to be is happy, and happiness comes from you yourself cause that's all you have at the end of the day.

Bob Marley - Three Little Birds

Song Description

"Don't worry about a thing,
'Cause every little thing gonna be all right.
Singin': "Don't worry about a thing,
'Cause every little thing gonna be all right! "

Rise up this mornin',
Smile with the risin' sun,
Three little birds
Each by my doorstep
Singin' sweet songs
Of melodies pure and true,
Sayin', ("This is my message to you-ou-ou: ")