"I don't have low self-esteem; I just have low esteem for everyone else."

I understand these feelings all too well - my father-in-law is living with my husband and I now after having been evicted from the second place he lived in as many years. He has no job and doesn't have an inclination to get one, he's in poor health and refuses to take care of himself, he can't keep a phone plan or car insurance, the list goes on. I wonder sometimes why I have to be responsible for this person who couldn't make it on his own in life, and why I have to drain my resources (both fiscal and mental) for him. Mainly, I'm just supporting my husband, but I definitely get it.