I go through a series of the draw, step by step. Position, feet, shoulders, feel of the grip, feel of the string with finger/tab alignment, rotational draw, drawing arm loose, imagine elbow coming around and back with muscle engagement, set anchors, hold, release with back muscle and follow through to the point of the shoulder. Over and over. If I tell myself that I am just going to hold on target then let down, seems like I can hold for ever. If I do release after holding on target for such a long time, I am extremely accurate.