Eleven is a master number, it strengthens the effect of Two. It is often the symbol of an illegal union of two people. Sometimes eleven is the symbol of your desire for a good, long-term relationship; it might also be the sign of a problem with or changes in your vegetative nervous system.
Dreams of September 11th and the demise of the World Trade Center is a venting dream that is helping you to release your shock and devastation over terrorists, war, bombing and destruction. Keep in mind that the darkest hour is always just before the dawn, and that you may be at that turning point. See Breakdown/Breakthrough Dreams.
Stopping at a 7-Eleven in a dream may be a metaphor for enlightenment It may be a sign reminding you that life is abundant. Anything your heart desires can be available to you twenty-four hours a day if you adopt the law of abundance.