It can be difficult to manage one’s time in everything. The best way I find to do it is through scheduling hours for work and extracurriculars. That does seem like a lot of work, but you can get through it with hard work and time management.
I answered a similar question about time management here: http://teachinginreallife.tumblr.com/post/81333137294/ive-had-this-a-few-times-the-teacher-rushes-to#notes
Teaching In Real Life 