I myself struggle with motivation too. I started a similar discussion a while ago and the consensus was that you can't move forward with language learning if you don't have this down pat. I have yet to find something that really inspires me to learn and learn well. Let me know if you find something that doesn't bore you (as recommended by Nelli) - I have yet to find something that doesn't make me want to up and quit each time I try to learn one of my target languages. I know that my life would probably richer and more fun if I learned another tongue, and I know sitting around waiting to catch a motivation by the toe isn't effective because, trust me, I'm doing it, and it doesn't work. I wish you luck.