How to Deal With Anger, Stress, Depression, Grief and Sadness from Islamic Perspective

The average human being in the developed world battles sadness, anger, stress, depression and worry on a daily basis. While the majority of the world's population confront extreme poverty, famine, conflict and despair those of us privileged to lead relatively easy lives must tackle fear, stress, and anxiety. Why are those of us blessed with riches beyond compare immersed in loneliness and desperation? We are living in a time of confusion, we try as we might, yet gathering material possessions can do nothing to mend broken hearts, and shattered souls.
Now, more than at any other time in human kind's history, stress, anxiety, and psychological problems are taking a tremendous toll on the human condition. Religious beliefs should afford a sense of comfort however; it seems that 21st century man has lost the ability to connect to God. Pondering the meaning of life no longer overcomes a feeling of abandonment. This desire to acquire material possessions, which in some way validates our reason for being, has become the balm that soothes our troubled souls. Why is this so?
We have the best of everything readily available, yet the reality is we have nothing. Nothing that comforts the soul. Beautiful furnishings do not hold our hand in the darkest night. The latest entertainment centre does not wipe our tears or soothe our furrowed brow. Those of us living with pain and grief, or afflicted with hardship feel abandoned. We feel rudderless on an open sea. Huge waves threaten to engulf us at any given moment. Our desires and debts stand at the apex and loom over us, like great avenging angels, and we search for comfort in addictions and self-destructive behaviour.
How do we step away from the precipice? In Islam, the answer is remarkably simple. We turn back to our Creator. God knows what is best for His creation. He has complete knowledge of the human psyche. He knows of the pain, the despair, and the sadness. God is whom we are reaching for in the darkness.