It may seem normal, or something that frequently happens, but a spiritual outlook teaches us that it is neither inevitable nor helpful. Nor is it something we inwardly desire. We more at ease when we are in a positive frame of mind. Worry, fear, guilt, anger and depression usually drain us of strength, distort judgment and prevent us from fulfilling our potential.
A lack of experience of the deeper qualities of the soul, and ingrained habits of thought, cause these feelings to arise. When we accept negativity as normal, this then reinforces and perpetuates the pattern.