For people with clinical depression is the complete opposite actually.
I don't have depression but I do have a similar condition & I have been in treatment for 6 years. My best advice here is that you talk about your feelings with someone, say friends, family or a therapist, sometimes when you feel bad but you know you can count with someone for support you feel much better, the worse thing you can do is to keep it to yourself.
I have to say that I don`t know exactly what clinical depression means, much less that I`m affected by it.
We all have certain issues but I`d say that I`m not depressive.
I know a few people who are seriously suffering of this disease and are medically treated for many years.
They are actually friends of mine and I was talking a lot with them about it, their feelings, though to suicidal thoughts, etc.
They also had more or less sleep disturbances, which is reasonable when you look at one of the main symptoms - anxiety. I was sitting with them preferably by night.
Tranquillizers and sleeping pills are still a part of their medication - so far my knowledge.
About the reasons of depression and what you can do against there is a lot to say. Just a few words.
It`s pretty obvious that mental diseases are increasing nowadays.
Depression is one of them.
Meaning - and senselessness of your own life, Genetic predisposition, social and educational issues, etc. are mentioned in this concern. There is a lot of information available about it in books and medias.
Interestingly when somebody is depressive all knowledge about his disease might not help him, the same with other mental diseases.
When you look at that you might be astonished about the way we use thinking, about it`s relation towards our feelings and emotions and what picture of the human being we generally have.
However, the essentials and the meaning of psychic diseases in human life seems to be not yet entirely clear.
I completely agree with you that these people absolutely should talk about it even when it seems to be pointless for them.
Depressive people tend to seclude theirselves from the world and that`s actually the worst thing that they can do. It will lead them deeper in their illness.
Dealing open with and talking about it is the first step to get healthy.