I've had to stifle my compulsion to have everything perfect before I push the shutter button. "If you see the shot you want," a very experienced photojournalist once told me, "it's too late." He taught me to shoot a few frames quickly as soon as I thought there might be a picture; only when I "had the shot" could I afford to spend a moment refining the composition, focus and exposure. Another thing he taught me was, "When you think you're too close to a subject, take another couple of steps forward."
I don't pretend to be very skilled. A camera is just a tool that I use to make visual notes or to keep track of some external narrative. mostly when I travel. But I would like to become as good at using one as I am a pencil or paint brush.