Breathing is the most direct lever you have on your state of mind. Stop holding your breath and you free your mind from being stuck in a loop. Slow your breathing down and your slow your mind down to the optimal level so it can think things through clearly and precisely. Smooth and silence your breath and you smooth and silence your mind from all unnecessary roughness and noise.
Keep your breath flowing freely at all times and you enable yourself to flow freely through life.
I wish you full command.