Lack of Energy

I don't know why, but for the past few days I have been feeling quite tired and fatigued, even though I have been having the normal amounts of sleep.

For example, today I couldn't read more than thirty pages of a book about the Korean war without dozing off or wanting to do something else. Even when I was doing something I liked, I got tired or disinterested pretty quickly.

I really hope that this will stop as soon as possible. It's very frustrating and I haven't accomplished anything significant since I started to have this lack of energy. At a time when I have so much to do, I simply can't let this continue!

Related: Concentrate!