To courageously take in the palm of your hand that which you fear, and to gaze into it with discerning sight, is to empty it of all dread. What is understood has little power to frighten. Inner peace is deeply tied to our ability to understand. To understand is to be at peace.
Icarus flew too close to the sun and fell from the sky when his wings melted. When to keep your distance, and when to allow yourself to get close in life, is a matter of careful discernment.