dear Tony, well great minds think alike. lol, because I was contemplating on whether I will post a similar comment, maybe one step side-wards.
What you have said is that it does happen and it can go on everyday, even if you have overcome depression, say for you and myself.
I had been thinking about this for a long time in that, say for me, that it's quite easy to be able to talk myself into depression, because a series of events hasn't worked out as I wanted them to, but I know that I don't want to go down that track, so I pull the reins of the horse back in, and then take another direction so that my mind goes towards thinking or doing something else.
I know from experience that I don't want continue thinking in a negative way, because that will lead me back to depression, and the same applies when I have a relapse, knowing that it's only going to last a day or maybe 2 days until I feel better.
Depression is the devil, because when we have had it we are prone for it to return, so it's always a daily job to keep it away, I can't see any other option. Geoff.