Most of the time we use only one sense, that is thinking. According to Buddhist psychology this is the sixth sense, but we have other senses which we sometimes neglect. So we can awaken the sense of seeing by looking at things, looking at flowers, looking at little objects, looking at the sky, the clouds. In fact we can develop concentration in this way. I know some meditators who find it easier to concentrate in this way rather than concentrate on the breath, where they can have complete awareness of what they are seeing, and they are fully experiencing the present moment in that situation. And when we see beautiful mountains, beautiful flowers, beautiful birds we have joy.