First of all, you should concentrate on your studies or work, whatever it is that you do. Try self love. Note down the positive things in your life and try concentrating on how to make them better. Also try meditating atleast once a day for 15mins which will give you focus that you can use to improve your professional life. As a friend, let me tell you, life doesn't stop when you shatter, You have to gather all the pieces and walk strong.