Dr. Russell Greenfield: It's not uncommon to experience periods of sadness, lack of energy and irritability, coupled with pessimism. We typically called these symptoms of depression. Provided these blues do not interfere significantly with your daily activities, they can be considered a normal part of living, something that shows up for a short period of time can be managed well and is then relieved.
Appropriate ways to prevent and also treat depression include regular exercise following an anti-inflammatory diet. Getting adequate sleep and practicing techniques that help you cope with life's natural ups and downs, including spiritual practices, meditation and being social.
In some instances agents such as SAM-e or St. John's Wort maybe appropriate, but this is best decided upon after consultation with your doctor. When depression doesn't lift however, persistently impacts your quality of life or become severe enough that you feel hopeless all the time seek help.
You may need conventional medical care including prescription medication. Counseling can be extremely helpful. Being open to treatment is showing a kindness toward yourself and in itself can be a springboard for healing to begin.