In the first place, you shouldn't believe in promises. The world is full of them: the promises of riches, of eternal salvation, of infinite love. Some people think they can promise anything, others accept whatever seems to guarantee better days ahead, as, I suspect is your case. Those who make promises they don't keep end up powerless and frustrated, and exactly the fate awaits those who believe promises.
Many are poets, but without the name;For what is Poesy but to createFrom overfeeling Good or Ill; and aimAt an external life beyond our fate,And be the new Prometheus of new men,Bestowing fire from Heaven, and then, too late,Finding the pleasure given repaid with pain
Antonio: Will you stay no longer? nor will you not that I go with you? Sebastian: By your patience, no. My stars shine darkly over me; the malignancy of my fate might, perhaps, distemper yours; therefore I shall crave of you your leave that I may bear my evils alone. It were a bad recompense for your love to lay any of them on you.
The weakness of modern tragedy[is that] transgression against the social code is made to bring destruction, as though the social code worked our irrevocable fate.