Eliminate distractions, and you can also use the Pomodoro technique.
Practice, practice and prayer ;)
Create a schedule by time that keeps you super busy- it will cut out all other distractions in life. Get off social media and just keep a couple apps you can use to actually contact people.
You should choose the correct place for your studies where no distraction can distract you from your studies and create a time-table for your studies.
Desire to learn.