Barring a few instances, feeling of being poor is similar in a developed economy vs a developing one. I'm experiencing this in a South Asian country-

Being poor is falling in a debt-trap no matter how financially disciplined you are.

Being poor is calculating your income & expenditures everyday and dreaming you would break even in the next month for sure.

Being poor is trying to avoid the worst days your loved ones have seen.

Being poor is going to work even if you feel sick.

Being poor is not knowing why you are so poor.