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.
Meditation helps
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.