The " no excuses " line is a military mantra about getting the job done, and not giving in to the many obstacles that will surely get in your way…it doesn’t refer to how one copes in the aftermath of getting the job done.
When I showed up for my first training in the Navy, as soon as I got out of my car, 2 guys were in my face yelling “There are NO excuses!”. It’s the most important thing you have to learn.