After deciding how much time is spent on each of these, you should have a better idea if you use more than 24 hours in a day. Some school activities have deadlines. These questions are often difficult to answer. Some individuals will schedule classes that conflict with job. Thirdly, don't put off things that must be done.
Procrastination is a common human trait that can be disastrous.
Don't put things off until the last moment. This is called managing your activities by continual crisis which will put you under continual high stress. Some stress can be a stimulus for higher achievement. If you were not under some stress, you probably wouldn't do your best. Look at athletes as an example.