The author’s use of his friend's job losses and the inability to hold down a job was the direct result of self-pity, a device to be seen as a victim in an attempt to garner another’s attention and sympathy. In actuality, this is a fallacious example of cause and effect (self-pity > victim role.) People usually fall into the victim role as a roundabout way of absolution from responsibility and blame not as a direct result of self-pity.
In contrast, the author uses an example of an acquaintance whose childhood was fraught with hardship, yet the acquaintance’s successes in life can be construed as a result of the acquaintance’s lack of self-pity.