Songs with excellent advice?

A couple more:

Nilsson: Lime in the Coconut

Lowe:  Cruel to be Kind

Dury: Hit Me With Your Rhythm Stick

 Mann: Wise Up

Alvvays: Ones Who Love You

Camper Van Beethoven: Take the Skinheads Bowling

Dead Kennedys: Holiday in Cambodia

CSN&Y: Teach Your Children

Dandy Warhols: Plan A

Waiting around to die, Townes van zant 

Only People by John Lennon (Mind Games 1973)

And we can't be denied with woman and man side by side
Make no mistake it's our future we're making
Bake the cake and eat it too
We don't want no big brother scene