Finally losing :o)

I don't really know what's gotten into me recently, but...
I'm FINALLY losing the Caitlin weight
(I say Caitlin weight because I'm still a loooong way off from losing the Avery weight). I have tried and tried and tried to lose this weight all year long, but, for whatever reason, I always ended up quitting after a few weeks. (I prefer to call it "cheating"). That being said...I lost 8.6 lbs. last month! Whoot!!
I entered into the 150's range for the first time since getting pregnant with Caitlin and, while it did feel good, the good feeling only lasted a moment because...
150 range is still freaking fat!
Seriously! But, I'm determined to be in the 140's by the end of this month (April 2nd is my one month deadline)...and the 130's by the beginning of May. To see that 130 again is probably going to make me throw a party. I haven't been there since getting pregnant with Avery! Through all this excitement I can't help but wonder..
where is this motivation coming from?!?
I know that it started because I knew my mom was going to visit for Avery's birthday and I'm sick of her telling me that I'm fat. Another motivational piece, my 10 year reunion is coming up soon (although, there hasn't been much talk about that recently...). And, I am sick of not liking to wear a bathing suit. I LOVE the water and it sucks to be embarrassed about putting a bathing suit on. These all got me started, but, I just don't know what has kept me going. I'm going to take it, whatever it is, though!