I would try to study in public libraries, because 1. your computer is not there, 2. its quiet, 3. other people are also studying so the atmosphere is better.
Set yourself a schedule and stick to it, e.g. set targets, limit the number of toilet breaks, set a time for study/break etc. Be more organised and systematic.
DO NOT study with friends because you will end up talking/playing with them! If you can get distracted by noise easily, wear a headphone (but don't play music!!).