The Depression

It's an interesting thing that you can be having fun, enjoying yourself but know that underneath that there is a little depression going on. I only realised it when I found myself wanting to go to bed early at night when I got home. I was literally exhausted but I hadn't had a more than usually busy day.
The darkness sets in at about 4ish and add the gloominess to some days and it gets to you without you even realising it.
LAst week I called a lot of people from home - family and friends. It wasn't really until the Wed night that I realised that even though I had landed on my feet I was still depressed! On some level loosening my ties to home had taken it's toll. At first it is easy to identify, because you feel lonely. But then you make friends over here and you think everything is ok. But you then realise that you are still feeling 'down'. So when I say depression it isn't tears and woe is me stuff, it is feeling low, being able to laugh and connect with people but feeling tired a lot.
Anyway, I wonder how I will be by February/March?