I have only had depression (diagnosed at least) for about 2 months, but I am building up an understanding of it which may help some. But perhaps by putting it here it will generate views (agreeing or otherwise) which we all will find useful.
It seems to be an illness with no one particular cause and not discriminating about who it affects, young or old, good or bad health, rich or poor.
I am getting the impression though that it's affects are in many ways similar from one person to the next person. It brings on extreme sense of desperation and low mood to worst degree one could feel. It also can swing, without reason, from an extreme low state to something more positive. But frustratingly can slip back to the previous state how ever hard one tries to hold onto the good feelings.
What I think I am learning is that as much as one feels very unwell and as ill as you have ever been. This is not what is actually occurring! So the inclination just to curl up into a ball and try to sleep is almost the worst thing as it just gives in to the illness.
On quite a few occasions now I have been able, despite all my senses to the contrary, to get outside and go for walk, go shopping, volunteer for a charity or even just sit in the sun. Though at first this has felt an enormous effort and, to repeat, the worst decision I could ever make. After a few minutes or half an hour I am feeling a little better. Not a lot mind you, but a little better. If I continue I actually begin to feel a noticeable improvement in my mood and that I don't feel so ill anymore!
It's as if there is a depression barrier which you have to push through to get to the better feeling on the other side. It takes a number of repetitions before you can be confident that the effort is worth it.
Of course it doesn't last and maybe the next morning you feel the same as you did the day before. But as you get to see that it is a way to break the spell, albeit for a few hours or the rest of the day, you will feel reassured.
I am hoping that as I gain confidence I will be able to start doing the right things for me sooner in the day, and reduce the time that I struggle with the depression.