Yes, it's important to breathe. Hold it while pressing the shutter. Breathe while looking. Awareness starts with the breath. I used to poo poo this stuff with the best of them. But the constancy of our breath punctuates the seconds. Work to notice it and gradually THIS moment becomes lucid. And a lucid moment fits the activity of photographing exactly. Or whatever the pursuit may be: analysis, invention, determination, patience, listening, giving birth(I've been in the room a couple of times). Stillness is the road to awareness. Awareness brings us into the present. In the present moment, now, is when we are at our best. Not projecting into the past or hoping about some future time. Now, take a deep breath and point your camera at something meaningful!