Is this the second verse your remember?
Don't slide down Gloomy Mountain where the storm clouds blow
Don't slide down Gloomy Mountain faces looking so [make a very sour face]
Turn, turn from crosspatch pouting, look to God on high.
Climb, climb up Sunshine Mountain, you and I.
A song or version of a song with the title "Don't Slide Down Gloomy Mountain" is attributed to Essie Haynes in SALVATION SONGS FOR CHILDREN, #3, published 1947 in Santa Monica, CA. http://www.hymnary.org/hymn/SSC31947/d8