I consider myself a productive person. I get most of my things done to a level which I'm happy with.
But sometimes my productivity just goes down the drain. I sleep in to the point of oversleeping (and even then I don't feel rested), and feel no joy in anything. On some level I want to work and I'm aware of what my goals are and everything but I just can't do it. Everything stops. I feel like procrastinating on the simplest task.
Then at other times I can work from early in the morning and until 2AM, getting a lot done and then wake up at 7 or 8 and go at it again.
I'm usually in one of two states: Either I'm really on, or I'm really off. I can't seem to predict or control it in any way. When I'm really off, I usually can't even concentrate enough to do something purely enjoyable like watching an episode of a TV show, and I just want to be alone in my room doing absolutely nothing. It's like I don't have a "normal" setting.
I have been like this for years, but now it's becoming a real problem since the tasks I am given are harder, so I can't "mask" it by simply sprinting through a lot of work to get ahead and then slow down to a crawl when my head stops working. I used to be able to do that, but now I just don't have the time for "down-time". And when I will enter the workforce, I will be even less able to do this (I'm just a student now).
What is your advice?