Iwtl how to complete daily study goals and be more interested to study?

I am currently in first year in a college but simultaneously preparing for an entrance exam, my college is from 9am to 2pm so after that how do I push myself to study more for that entrance examination and become more inclined to spend rest of the day on that with full focus?

I want to learn to do focussed and effective study for longer hours and complete them on time and become more inclined towards studying.