I've had this problem my whole life

However, I feel that I'll be very much in the same boat soon. I'm returning to studies after a break, and need to get good grades to push up my GPA, and I've never been into studying, so I'll try and brainstorm some possible solutions.
- a big problem with studying is finding motivation, so make a note to yourself as to why you want to study - make a goal for yourself, and keep your eyes on that goal
- try and make studying as easy for you as possible. Look at your natural inclinations - what are the things you find that you naturally have an easy time getting involved with? Creatively tailor your study methods to fit your natural behaviours
- seek help from others, whether this be teachers, or friends and family
- keep your body and mind in good shape. Eat well, sleep well, keep away from recreational drugs (by which I am including things like caffeine and alcohol) as much as possible
- when studying, make clearly defined goals as to what you want to achieve, and make them easily achievable i.e. don't take on too much at once
That's all I can think of for now. Good luck!