Hello @chbartist !
I did not know the story about the slogan of the infantry. It is very interesting to know the transcendence that could have for the troops to have their mind focused on this very basic thought.
It might seem selfish, but in reality it is a kind of survival slogan. If we are so interested in the welfare of others, being focused on ourselves would be a real protection for them. I find it particularly applicable to the family and our immediate environment. If we really care that our loved ones are well, we must be good first. That well-being can then be transferred to their environment, infected with good vibes or, on the contrary, made part of our success. But it would be very sad that the only thing we can transmit to them is sadness or failure.
Best regards. Excellent article!