Black moods often follow when you have slept badly.  Not all the time for peoples’ constitutions differ.  There is nothing like a solid good night sleep to restore your mood and dispel depression due to fatigue.  Your emotions sometimes are deceivers.  You can’t always rely on them to be accurate.  If you are eating correctly (yes, a poor diet heavy on sugar can exacerbate depression) and sleeping well and you are often depressed, there is another reason you are depressed and you have to look at that.  In any case, realize a bad night sleep can darken your moods and all it takes is a good night sleep to brighten your day.  Depression can be solely physiological due to a bad night sleep.  Sleep is restorative.  When you sleep, your body purges itself of poisons.

Nothing had changed from yesterday and today.  Yesterday I was depressed.  And today I was not.  The only difference I could gather was that last night I got a solid night sleep.  Sometimes the explanation for a depression is that simple:  I was overly fatigued.  And the depression lifts after a good night sleep.  It is that simple.  There is no complicated psychological reason.

The depression was totally physical.  I sometimes forget that.  I always have to look at that first.  It could be that simple.  I am aware I have a tendency to become depressed when I don’t sleep well and enough.  Or overdo it or both.  Every one is different.  I just have to respect my limits.