Emotionally, grief is a mixture of raw feelings such as sorrow, anguish, anger, regret, longing, fear, and deprivation. Grief may be experienced physically as exhaustion, emptiness, tension, sleeplessness, or loss of appetite.
The Courage to Grieve: The Classic Guide to Creative Living, Recovery, and Growth Through Grief (ed. Harper Collins, 2009) - ISBN: 9780061873119