Studying Japanese

I would really love to be able to speak Japanese fluently, to be able to interpret in all situations with finesse and speed. I know full well that such a level of competence takes time and dedication, but I can't seem to bring myself to study. It's far easier just to sit back and listen. Although I have learned quite a lot of Japanese since I have been in Japan, if I had studied dilligently every day then I would be a lot further along the road to fluency than I am now. Time will tell...