When do we feel depressed?
Answer from Sheikh Mokhtaar Magraoui:
We are in the womb of this Universe; the umbilical cord is dua of the Muhadith to Allah. Severing the Umbilical cord of dua to Allah we may experience Gham and Hum and depression.
In our dua we should learn to give up our Quloob to Allah, in our dua not to be conditional.