If by Rudyard Kipling https://www.poetryfoundation.org/poems-and-poets/poems/detail/46473

If you can keep your head when all about you are losing theirs and blaming it on you;
If you can keep your head when all about you are losing theirs and blaming it on you

If you can trust yourself when all men doubt you but make allowance for their doubting too;
If you can trust yourself when all men doubt you but make allowance for their doubting too;

If you can wait and not be tired by waiting Or, being lied about, don’t deal in lies, Or, being hated, don’t give way to hating and yet don’t look too good, nor talk too wise.
If you can wait and not be tired by waiting Or, being lied about, don’t deal in lies, Or, being hated, don’t give way to hating and yet don’t look too good, nor talk too wise.

If you can dream and not make dreams your master If you can think and not make thoughts your aim;
If you can dream and not make dreams your master If you can think and not make thoughts your aim;

If you can meet with Triumph and Disaster and treat those two imposters just the same
If you can meet with Triumph and Disaster and treat those two imposters just the same

If you can bear to hear the truth you’ve spoken Twisted by knaves to make a trap for fools
If you can bear to hear the truth you’ve spoken Twisted by knaves to make a trap for fools

Or watch the things you gave your life to broken And stoop and build ’em up with worn out tools
Or watch the things you gave your life to broken And stoop and build ’em up with worn out tools

If you can make one heap of all your winnings And risk it on one turn of pitch-and-toss And lose, and start again at your beginnings
If you can make one heap of al your winnings And risk it on one turn of pitch-and-toss And lose, and start again at your beginnings

And never breathe a word about your loss; If you can force your heart and nerve and sinew to serve your turn long after they are gone
And never breathe a word about your loss; If you can force your heart and nerve and sinew to serve your turn long after they are gone

And so hold on when there is nothing in you, Except the Will which says to them: “hold on”.
And so hold on when there is nothing in your, Except the Will which says to them: “hold on”.

If you can talk with crowds and keep your virtue Or walk with kings nor lose the common touch
If you can talk with crowds and keep your virtue Or walk with kings nor lose the common touch

If neither foes nor loving friends can hurt you; if all men count with you, but none too much;
If neither foes nor loving friends can hurt you; if all men count with you, but none too much;

If you can fill the unforgiving minute, With sixty seconds’ worth of distance run
If you can fill the unforgiving minute, With sixty seconds’ worth of distance run

Yours is the Earth and everything that’s in it, And – which is more – you’ll be a Man, my son!
Yours is the Earth and everything that’s in it, And – which is more – you’ll be a Man, my son!