Afif! I hope you will really take mama's advise as your guidance.
Firstly, you have to fix your schedule on your daily activities. You have to improve your time management. Then only you will have appropriate time for study, rest, perform your ibadah, recreation, etc, etc, etc.
Secondly, change your bad attitudes.
Thirdly, discipline yourself.
Remember Allah always. To perform Solat no matter how busy you are.
Remember Mama loves and cares for you so much now and thereafter.
Love
MAMA