Now, should any readers be currently on anti-depressant medication, please do not stop taking your medication -- and definitely don't stop taking the medication suddenly -- without first talking the matter through with your health care professional. That is extremely important. Having suffered in the past from clinical depression, I did find anti-depressant medication helpful, and I still think that medication of that kind has an important role to play in the treatment and management of clinical depression. (See also the 'Important Notice' below.)
One more thing. So many loved ones say—more out of frustration than anything else—to the person suffering from depression, ‘Just snap out of it!’ This is probably the worst advice anyone could give to a person with depression, other than saying, 'I know how you feel.' To say, 'Just snap out of it,' may even make things worse for the person who is very much caught up in a process that, for the most part, is not amenable to exercise of the person’s will or conscious control. In that regard, clinical depression is a bit like an addiction, where the addict is similarly caught up in a process beyond their conscious control. Will power is captive to both clinical depression and addiction, so forget all about will power. The good news is that the vast majority of people with depression do get better. Recovery may take some time, and may require a combination of different treatments, but recovery is indeed possible and it is the norm. In my case, after about six years of relative misery, and undergoing a variety of treatment modalities, the depression just stopped--just like that! So, hang in there. Never lose hope. Never give up.