My dad used to say a similar thing, each failure brings us closer to being the right person to create the success we seek, or words to that effect. Dad's are smart I guess.
The rich/poor thing is yet another way people manage to justify cruelty to others, more bad human behaviour. It's common, as is racism l. I'm just glad we're the sort of people to take it and turn it to our advantage.
Thanks for commenting, I appreciate it.