First and foremost, it is important to focus on one thing at a time. According to the infographic, people have an average of 49 thoughts per minute. Practice thinking about just one thing at a time so you can give your entire focus to the task at hand.
The infographic also suggests to just keep moving. Instead of stopping after getting stuck on something, just move on to the next task and come back to it later. Create first drafts in five-minute time periods and don't worry if they are terrible. Keep email replies as short as possible -- try to stick to the Twitter rule and reply in 140 characters.
A few other ways to work faster is by listening to music, keeping a clean desk and turning on bright lights.