When I first started playing Counterstrike: Source around 2004, I sucked so badly averaging 1:2 or 1:3 kill:death ratio. Almost after every death would result in me slamming my mouse (a Logitech MX310) down on the table. The mouse survived approximately 3-4 more months of that before it finally broke and would no longer track. That's when I realized I needed to calm down and since then have done much better, usually in the 2:1 ratio range.