I was severely criticized in another "Christian" Website for saying that a lot of depression is caused by a lack of trusting the Lord, and by self-pity and feeling sorry for one's self. Despite even one pastor disagreeing with me, I still believe that.
How much depression is caused by an actual medical condition that would require medication, and how much is caused simply by self-pity? Poor me, my life [is terrible*], and God hates me because He won't let me win the lottery. People get depressed because things are not going the way they want. That is NOT a medical condition; it is a SIN condition.
ALL of my depression in the past was caused by one thing--self-pity. Yes, I hurt from my neck down to my feet. I'm sexually impotent. One of my daughters told me she wants nothing more to do with me. The list goes on, but I have learned to rejoice in the Lord rather than feeling sorry for myself. Some of that I brought on myself. That is a lack of trusting God, and it's sin.
Yes, there are medical conditions that cause depression, and medication is in order. However, this nation is too quick to run to a doctor and demand pills for every ailment, ache and pain. My mother was like that. She was a hypochondriac who asked for pills for everything--including the fact that she "sighing" all the time. She didn't realize that the sighing was caused by boredom because all she did was sit and do nothing. People want pills for their depression that is more than likely caused by self-pity, or even just the fact that they don't have a life. I'm too busy enjoying my retirement and praising and glorifying God to get bored. The more we see of the Lord, the less we will see of ourselves and our troubles. As John the baptist said, 'He must increase, and I must decrease."
Pills won't make life any better if the problem is sin. I heard of a doctor who said the mental hospitals could be nearly emptied if the people could just learn to deal with their guilt. Guilt also causes depression. Been there, done that, and I won the victory through Jesus Christ and not pills or doctors.