It can be hard to concentrate, sometimes. Especially with a wide array of distractions readily available. And yet, to do anything more than habitual drudgery, we need to be able to concentrate. And not just for a minute at a time between searching tweets. So how does one concentrate in a world filled with distractions?
There are two options. Change your environment to minimise distractions. The second is to change yourself to be less distracted. Sometimes you won't be able to change your environment.
It would be nice to focus in a quiet park. Tuning into some radio (using earphones) could be the next best thing. If your work involves a lot of co-operation, however, this may be impossible. You're left with using your own brain to tune out the noise.
Have you tried doodling?