Guilt in a dream usually points to something unresolved -- a wrongdoing, real or perceived, that your conscience hasn't let you set down yet. Confessing in the dream can reflect a wish to finally address it directly, while being unable to explain yourself often names how stuck the self-blame still feels.
Destiny is not a matter of chance, it is a matter of choice; it is not a thing to be waited for, it is a thing to be achieved. (Bryan, William Jennings, 1860-1925, American Lawyer Politician)