A different way of going about it, maybe. Instead of focusing on what you have to do, focus on something you enjoy doing. I assume most of those things don't really have anything that would remind you of the cause of all this.

Another idea would to be to focus all that anger on something. Like I said, it's an emotion, and emotions can be used to your advantage. Combat in particular. [Just don't turn into a lung-flapping abomination, bro. Trust him, shit sucks.]