" Sitting in the lotus position or lying down on your back, begin breathing into your belly. Keep your mind entirely on the belly as it rises with every in-breath and falls with each out-breath. Breathe deeply, maintaining full attention on your abdomen. Don’t think. Stop all your ruminating, and just focus on the breathing. "

― Thich Nhat Hanh , Peace Is Every Breath: A Practice for Our Busy Lives