What happens next?

How to concentrate on reading or work
Find a quiet place.
Consider the potential distractions of a place and choose one that has as few of them as possible.
The ideal place will vary from person to person: if the presence of other people distracts you, avoid libraries and common areas in your house.
If noise is what bothers you most, the library could instead be the perfect environment for you. Avoid spaces that you associate with other activities: these could work as a distraction.