My own favorite John Denver song is

Some Days are Diamond

You ask me how I've been here without you
I like to say that I'm fine and I do
But we both know that the truth is hard to come by
And we know that it just isn't true

Some days are diamond, some days are stone
Some days the hard times won't leave me alone
Sometimes the cold wind blows a chill on my bones
Some days are diamond, some days are stone

Now the face that I see in my mirror
More and more is a stranger to me
More and more I can see there's a danger
Of beoming what I never thought I would be