Everyone in this universe have equal time. Time management plays very important role in success of a person.
First of all review your daily and weekly activities to see what is your necessity and what can be dropped.
Make your study plan. You should know what to study, how to study and what not to study.
Make a time table, in which you have time for every subject of your course as well as time for refreshment and other daily activities.
Set realistic and short/long goals for completion of topics/chapters/books. When you achieve your target, you will feel happiness and it will boost your confidence.
Some subjects need comparatively more concentration. Assign them the time in which you are more active and alert like in morning you are more fresh.