Apparently I use this method… without knowing it!
Japanese- I use it the way you describe it, Koichi. The feeling I get when I learn 10-20 vocab in one day is like a tiny weight has been taken off my back. Little by little I’m taking more off until I can gradually stand up… That’s how I see it… Don’t know if I explained myself correctly…
I also use this method in guitar playing… Sometimes practicing the repetitive riff is boring but when I think of rocking out and playing like Metallica I try learning a certain part harder! Of course guitar is already fun… but if everything has an up it must have a down!
I use it in Math but again math is already fun to me ;)
Of course Japanese is fun, too!