Yeah you need a study buddy. I've been toying with the idea for a while of setting up a website to list people who are learning Japanese, the area they are in, the level they are at, and contact details so people can get in touch with each other. Having a study buddy in the same time zone as you would be useful, and if you have Skype on the computer and a microphone then you won't even need to be in the same town. Keep at it. I go through ups and downs.
Don't stick just to Pimsleur, just use it as one learning method. Get your pen and paper out, learn Hiragana, Katakana then move to Kanji, a fantastic motivational tool when you realise that just a couple of weeks work can allow you to read everything except Kanji and suddenly everything is looking up again, I know this happened to me.
Also try doing more than just listening to or reading vocabulary, get a book that explains some of the subtlieties of the language, pick up a book on particles and one on sentence structure for example. There is more to learn about the language that spoken words, and once you broaden your scope you'll find that if you can't be bothered with the CDs at the minute there is something else you can study with instead.