Vin Garbutt did a fine song version of "If" on his LP "Little Innocents. "As a way of life I can't fault it", he commented.

Here's a poem (and a song as well) by Kipling which is maybe particularly apt right now:

Gethsemane (pub. 1919)
1914-18

The Garden called Gethsemane
In Picardy it was,
And there the people came to see
The English soldiers pass.
We used to pass - we used to pass
Or halt, as it might be,
And ship our masks in case of gas
Beyond Gethsemane.

The Garden called Gethsemane,
It held a pretty lass,
But all the time she talked to me
I prayed my cup might pass.
The officer sat on the chair,
The men lay on the grass,
And all the time we halted there
I prayed my cup might pass.

It didn't pass - it didn't pass -
It didn't pass from me.
I drank it when we met the gas
Beyond Gethsemane!