Omamori are charms intended to offer protection against a wide range of problems in your life and uncertainties. However, it goes without saying that your dreams do not come true like magic by grace of Buddha when you keep an omamori. What is important is that an omamori brings you awareness of being watched over by Buddha. The best thing is to pray to Buddha so that you get opportunities over which you have no control, as well as to step up your efforts.