You must believe before you can receive. This is true with anything. If you believe good things happen it's more likely that good things will and also if you believe bad things will happen they probably will. This is not to say the good and bad things won't happen, but you make your life what it is. If you focus on good things that's what your life becomes. Believe in good things to happen and even when things don't go your way believe that God works everything out for our good and keep believing for His unconditional favor.