Pretty off-topic here, as this is about video games. I've noticed that one of the main reasons why I struggle with first-person-shooter games is my amazing ability to completely tense my entire body. I also hold my breath a lot while playing, which is probably not helping. This prevents me from moving my wrist fast enough, or even far enough, to aim properly. I wish I had a way to record myself playing so I could see when I tense up, and correct it. Also, I just ordered a new mouse (Logitech G502), mousepad (SteelSeries Qck Mass), and mouse bungee.
Anyways, here's my new desktop background, taken from CarThrottle.