I actually go to school but when I learn something new that’s outside of school I believe it’s what you are doing it for. In school you learned to get a good grade so later you could get a job. Now when you are not learning in school think about what you are doing it for what is different from when you learned in school.
Firstly I would find something I am interested in learning about. I usually watch youtube videos and to me it doesn't occur to me like I am back in school even though I am learning something new. I also Google a lot on the subjects that I am interested in.