Control, apparently, is not the answer. People who need certainty in their lives are less likely to make art that is risky, subversive, complicated, iffy, suggestive or spontaneous. What's really needed is nothing more than a broad sense of what you are looking for, some strategy for how to find it, and an overriding willingness to embrace mistakes and surprises along the way. Simply put, making art is chancy - it doesn't mix well with predictability. Uncertainty is the essential, inevitable and all-prevasive companion to your desire to make art. And tolerance for uncertainty is the prerequisite to succeeding.
Another excerpt from Art & Fear. I found it meaningful, hopefully some others out here shall too.
This was an image I made in Vermont, near a small church we had stopped to photographed. The ground was layered in fallen leaves and I was laying in them staring straight up, admiring the blue sky and yellow leaves, the warmth of the sun, and the lazily drifting clouds. This was how it all felt to me.