(a.) You have caught a break, you have indeed been very fortunate, but you have failed to appreciate the break you have caught — you should appreciate your good fortune.
(b.) You’ve been unlucky, that can’t be denied. But if your failure has only been a matter of having bad luck, maybe your success is only a matter of having good luck.
(c.) There’s something about you that prevents the occurrence of things you consider positive from happening to you.
(d.) These are unjust times, which one is too just for — what is a just person to do in such times?
(e.) Opposite of the preceding.