[loco5niner]

> The OP makes it sound like inability to focus is a normal thing, but it's not.

But it is normal. When there are noises and distractions all around your desk, of course it's hard to focus.

It's also normal to be able to drown all those things out, and completely zone it out and focus on work.

It's also normal to thrive on activity, getting your best work done in a busy environment.

It really depends on the kind of work you are doing, and the kind of person you are. There is a wide spectrum of what is "normal".

There is a simple reason that libraries/exam rooms/lecture halls are not full of distraction. People focus better without distraction.