By definition, a miracle means something that goes beyond the confines of nature. This means that if we want something in our life to change and we want things to be different, then we need to go beyond our nature.
The key to creating a miracle is to take the extra step when it is difficult to do so: when we are too tired to volunteer, when we don't feel like going out and being with other people, when we simply can't muster the ability to smile and be nice to someone else. When we reach beyond our comfort zone at these times, we can also expect the universe to do the same on our behalf.