Jealousy would be far less torturous if we understood that love is a passion entirely unrelated to our merits.
For my own family I would always choose the makeshift surrogate family formed by various characters unrelated by blood.
There is an electric fire in human nature tending to purify - so that among these human creatures there is continually some birth of new heroism. The pity is that we must wonder at it as we should at finding a pearl in rubbish.