I cherish the dreams of yesterday and dare not dwell on the err's of my past whose fate has been long decided, and effect I can not change. For the dreams of yesterday are the challenges of today, and the hope for tomorrow.
Human reason has this peculiar fate that in one species of its knowledge it is burdened by questions which, as prescribed by the very nature of reason itself, it is not able to ignore, but which, as transcending all its powers, it is also not able to answer.
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.
Anyone who cannot come to terms with his life while he is alive needs one hand to ward off a little his despair over his fate... but with his other hand he can note down what he sees among the ruins.