Mainly, the Blues or depression is literally holding in unexpressed feelings and even unhealed/unresolved disturbing or traumatic memories. It can indicate repressed or buried emotional pain. There is a feeling of disappointment or frustration or no longer being in control of your life. Experiencing distressing life events like a significant loss - unemployment, divorce, illness, death of a loved one, family problems, childhood experiences like being physically or emotionally abused, or aging can all leave you feeling down and depressed.
It can be caused by “frozen anger” coming from an experience that caused a feeling of anger from hurt, or being treated unfairly, and at the time you couldn’t express the feeling of anger properly, so the anger becomes suppressed and builds up and causes depression. It can come from being alone, too stressed, physically exhausted and having no one to talk to. It can come from types of physical illness which can alter how the brain works and cause depression such as hormonal problems, viral infections, painful or lasting illness, e.g., arthritis, heart disease, and cancer.
As you can see, there are many causes of the Blues or depression, and it might find you when you least expect it. It's a normal part of life to feel down from time to time. But there's no reason for you to continue feeling that way. You do have the power within you to beat those Blues! All you really need is the drive to get rid of them. The rest is all just a matter of how.
Here are some tips and techniques to help you kick the Blues to the curb!