Not all depression is the same. There are a variety of different causes for depression and thus a variety of different treatments depending on the nature. If you have experienced depression, what helped you might not help someone else, depending on what is causing their depression.
Since depression causes can be multi-faceted, involving several different moving and interacting parts, it is usually advisable to have a professional ask the right questions to make a diagnosis and direct treatment.
Stress/anxiety chemicals in the body are antagonistic to brain chemistry. Chronic exposure to stress is shown to slow/inhibit neurogenesis (new nerve formation) in key parts of the brain. It also inhibits the brain’s ability to produce important neurotransmitters (communication chemicals). This is often a significant contributor to depression connected with burnout.
Acute, severe or intense, stress can also result in depression. Examples might be grieving significant losses and traumatic experiences (fear-inducing, perceived threat to life, intense physical or emotional harm).
Physical illness or injury and/or accompanying treatments (drug or otherwise) can negatively affect brain chemistry, leading to depression.
Some people’s biological make-up, as determined by their inherited genetics, are predisposed to depressed brain chemistry. In these cases, the brain chemistry more easily slips into a depressed state and has greater difficulty adjusting to the means necessary to get out of a depressed state. Genetics seem to play a big role in Seasonal Affective, chronic Major Depression, and Bi-Polar disorders.