My council consists of two parts, 1st: What is the objective that you pursue when you study, what do you want to obtain from the career you chose? Does that really fill you? What will your career contribute to others that may be more valuable than simple money? and 2nd: Use the POMODORO system, said in a few words, periods of focus in your studies of 25 minutes and 5 minutes of rest, repeated that sequence for a prudential period according to your own health.