Melancholia

Sometimes I just feel a bit sad.
It doesn't feel related to anything that has gone on or has happened, I just feel a bit down. And I know it will pass too- but I think it's kind of like a headache or something- I don't know the cause, but I assume its something internal like the Greeks and their humours being out of balance or whatever.
Is this picture sad? Not sure. Grey, dark, but when I was taking it my laddie was happy to have reached the top.
And in a funny way maybe I should be doing something a bit scary or pushing myself to feel that exhilaration of achieving.