When we consider reality itself we quickly become aware of its infinite complexity, and we realize that our habitual perception of it is often inadequate. If this were not so, the concept of deception would be meaningless.
The right way to deal with mental unhappiness must be within the mind too. On an emotional level, anger, fear and worry bring unhappiness. Scientists say they eat into our immune system. On the other hand, we are also equipped with a sense of affection and compassionate concern for the well-being of others.
People should not rush to change religions. There is real value in finding the spiritual resources you need in your home religion. Even secular humanism has great spiritual resources; it is almost like a religion to me.