It doesn't happen very often. As a general rule I move along not Happy and not unhappy, just moving along. On a rare occasion something will happen and I think - at this moment in time I am Happy.
Today I was out hunting for 'Water' and out of the long grass flew a bird - I snapped 3 photos in a row. He flew in, landed and then took off again..... I still can feel that one moment beating inside my head.