Listed below are my five simple tips when you lack of motivation while studying or preparing for something.
5. Don't procrastinate.
4. Divide your task by parts so it will get easier.
3. Think of the reasons why you are doing it.
2. Alot time or better time schedule.
1. Don't forget to rest in between.
I know these are very simple but that they have helped me ever since.
A tip in life: Be GOOD and HAPPY most of the time.