Looking for lyrics and music - Sing

[sensiblehorses]

As I boy I sang a song I'd like to find again. The title was "Sing".
Lyrics began: When you're burdened with sorrow, do you long for tomorrow, listen brother this is what you ought to do. You ought to sing when life is so weary, sing when skies are so dreary, sing when everything seems so blue.Loads will seem so much lighter, skies will seem so much brighter love will surely then shine on you.....It was in one of those paper back gospel songbooks we used to use.