From everything you say the experience has been super positive so far. And I'm glad for you.

These days my sister took my nephew to take the university entrance exam, in the university where I studied, by the way. And she told me that she felt like going back to study again while there.

I don't dislike the idea, I just don't know if I want to go back under the pressure of taking an exam or doing a homework. I remember a few years ago when I did a diploma in Positive Psychology, I enjoyed the classes a lot but most of the assignments made me very annoyed to have to do them, hehe. And I thought to myself, maybe I'm too old for this homework thing lol.