Open eyes
I completely agree. I know plenty of people who spend a big chunk of life and especially the earlier years in school. They graduate having learned how to excel at tasks that for the most part don't exist in real world settings. I am very glad I took some time to get a career job outside academia for 8 years. Some things I loved and some I didn't like. But I learned what kind of jobs I am really interested and things I am good at in a real world setting. Now I am back in school, but after my experience I am thinking less about grades and much more long term for my new career path.
I would also advise to get out there and take a job. Even if you aren't sure, get started doing and see where you can head. "Oh the places you'll go."

P.S. Rubik's cubes have nothing to do with anything except spatial reasoning. Don't sweat not being interested in them.