How Do You Get Motivated?

There was a time in my pursuits in education that I turned in my work on time, worked hard and applied myself. Now, I have failed so many times, missed classes, not turned in work, and for years I seem to have been drowning in depression. I am still now. I love the art - I love opera and music, all that I'm studying. The drive is gone until I go out and see an opera or watch one online, surrounded by the culture in motion instead of the emptiness and bleakness of the classroom.
On top of that is the family and past trauma that I have to take care of, but I feel so tired and slow and unmotivated. Is this normal?