Hi, depression is a state of low mood and I experience it some days. Have you ever felt it?
Yes I have, I had post partum depression. Have you?
Yes, sometimes. Its a temporary reaction to life events that can be distressing. 
Yes and other times it can be very long term. Medication helps alot if you are on the correct one.
major depressive disorder or dysthymia; it is a normal temporary reaction to life events, such as the loss of a loved one; and it is also a symptom of some physical diseases and a side effect of some drugs and medical treatments.
Factors.
Factors Life events.
Adversity in childhood, such as bereavement, neglect, mental abuse, physical abuse, sexual abuse, and unequal parental treatment of siblings can contribute to depression in adulthood. Childhood physical or sexual abuse in particular significantly correlates with the likelihood of experiencing
Toward a Jewish Future."
The 614th Commandment Conclusion.
During Fackenheim's last interview in 2000 he confronted the question, "Do you think Israel can ever come to the point where it doesn't have to be in a state of resistance?"
I think it will be a very long time. But I would say this. Will the time ever come when we can say Hitler's shadow is gone? I think, yes, it will come when Israel is accepted in peace with its neighbor states.