"Considering the inconceivable complexity of processes even in a simple cell, it is little short of a miracle that the simplest possible model - namely, a linear equation between two variables - actually applies in quite a general number of cases."

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So give your complete attention to what you feel, and refrain from mentally labeling it. As you go into the feeling, be intensely alert. At first, it may seem like a dark and terrifying place, and when the urge to turn away from it comes, observe it but don’t act on it. Keep putting your attention on the pain, keep feeling the grief, the fear, the dread, the loneliness, whatever it is. Stay alert, stay present - present with your whole Being, with every cell of your body. As you do so, you are bringing a light into this darkness. This is the flame of your consciousness.

— Eckhart Tolle