Not any one last straw in particular. I had lost almost 80 lbs in the year previous to getting pregnant. Once I had my daughters I was super overwhelmed with them and gave up taking care of myself. Now I realize its 4 years later and it's really time to take care of me again.
Also we're planning a big move to NYC and I know that I need all the confidence I can muster to make that a successful move and a big part of that is getting my weight down. So now, a few months before the move I'm all in to get back to where I was before I got pregnant. That's not my final goal, but that goal will be enough to give me my confidence back.