Jessica, there's some good advice in these posts. Drink all the water you possibly can, exercise whenever and however you can. Have you tried strength training? It's really hard to get into for me, but I'm trying. Muscle burns more calories than fat, but my motivation is that when I finally shed all of this weight I want everyone to see nice toned muscles instead of weak flabby ones! I also really like yoga, because it keeps me limber, which helps when you exercise and just with everyday tasks. And it just feels good to ssstttrrreeeccchhhh!
As far as the motivation goes, it sounds like you're doing great! Keep coming here to chat with others, and the journals are great too. Journaling really helps me sort out my thoughts, and I usually gain some valuable insight from others as well.
I have learned a few tricks about motivation and self-esteem in the month since I've been here, some from this site, some from my own experiences. I read a book by His Holiness the Dalai Lama called "The Art of Happiness," and although he wasn't talking specifically about weight loss, he did give some very good advice. He says that whenever you're faced with a decision, ask yourself, "will this bring me closer to my long-term goal of happiness, or just give me temporary pleasure?" For example, climbing on the treadmill will make me happier in the long run but not really provide any temporary pleasure, whereas inhaling a bag of Doritos will bring me temporary pleasure but make me feel like crap after I'm finished. Try it, it makes decision-making easier.
That's another thing I realized: everything is a decision. It took me a while to accept full responsibility for myself, for my weight, for my habits. But one day I just realized that everything I put in my mouth is my decision, that I have complete control. I don't have to take another bite if I don't want to. I know it sounds simple, but sometimes it's hard to think of it that way.
One last thing--you've got to be your own best supporter. Try picturing yourself exactly as you want to be, right down to the last detail: your clothes, your hair, your muscles, that little cavity above your collarbone, how you walk... everything. Practice picturing that until you can do it clearly any time you want. Now here's the trick: that vision is your motivation, your own personal coach, your goal. But it is also the Future You. The other day I was picturing my Future Self while I was walking on the treadmill, and I started worrying about all the crap going on in my life, so I just decided to ask Future Me how everything was going to turn out. Among other things, she told me to keep doing what I'm doing and I'll reach my goals. I know it sounds silly, talking to myself, but it really did help. I'm a lot less worried now than I was a few days ago, not just about my weight, but about my life in general.
Whew... that was longer that I intended it to be! Guess I'm feeling talkative today.
Anyway, keep your head up. You're doing GREAT so far! And you sound like you have a very realistic and healthy attitude. Keep at it, and you will get there. Stick with us, and we'll all get there together.
~E
I need someone to believe in me.
...Since I've started my own diet...no fad ones or anything although I do go with Weight Watchers points and try to stay within that...I drink nothing but water (sometimes flavored) I've given up soda and candy and chocolate. In substition I eat apples and bananas and stuff...Yah I surely get the cravings and stuff but I try to think of the big picture...I thank you for writing here and hopefully we can help each other out...my e-mail is 
write me anytime. 
