Hey Angela!
Sorry for the slow responses -apparently we're too busy arguing over whose bench press numbers are B.S. or not, LOL...

Things have been kinda quiet over here on the Fem BB board, and sometimes new posts slip through the cracks
First of all, welcome to DiscussBodybuilding! it sounds like you've made some kick-butt progress...
The highest I've ever weighed was 203lbs. I currently weigh 245lbs (which I've lost about 8lbs in the past month and a half because I started at 153)
...that is, assuming the 245 was a typo
In any case, you're dealing with a pretty common problem, as far as motivation is concerned. It's common to have seemingly bi-polar swings in motivation when you're doing so many other things in your life. Nothing wrong with that -in fact, hitting the gym every single day is probably not such a good idea anyway. It's nothing to beat yourself up about, certainly. The way I see it, if my mind isn't in it, I'm not going to be operating at 100% in the gym. Marina has a good point about finding a training partner with similar goals to help keep you motivated. Joining a group like this and posting regularly is also an excellent way to stay fresh and eager.
On the other hand, I find I don't have so much of a problem motivating myself to keep chugging along, because I don't have much of a life outside of my bodybuilding interests these days, ha ha ha! If I ever find my motivation waning, I find a mirror, look myself square in the face and ask, "The eff is wrong with you? Quit now? After you've made this much progress, are you smoking CRACK? Yeah, I bet all the haters out there would LOVE to see you fail. That's right, EFF them! Now get your skinny a** in that gym and act your age!"
Okay, maybe that's not everyone's cup of tea, LOL... But my point is that every once in a while, you have to remind yourself why you are doing this, and the first and most significant reason that springs to mind should be,
"I'm doing this for ME!"