Learn the art of patience. Apply discipline to your thoughts when they become anxious over the outcome of a goal. Impatience breeds anxiety, fear, discouragement and failure. Patience creates confidence, decisiveness, and a rational outlook, which eventually leads to success.
If I had to sum up in one word what makes a good manager, I'd say decisiveness. You can use the fanciest computers to gather the numbers, but in the end you have to set a timetable and act.
I was always an unusual girl. My mother told me I had a chameleon soul, no moral compass pointing due north, no fixed personality; just an inner indecisiveness that was as wide and as wavering as the ocean.