The "Ah ha!" moment

Hi. I am here to get back to where I was before I had my beautiful twin girls almost two years ago. Before the Twins my husband and I had great success on the South Beach diet. I lost the last 30 lbs from when my now 7 year old son was born. However, sincethen South Beach didn't work. Couch 2 5k didn't either (even though I love it). Yesterday a co-worker overheard me talking about SB and starting it again hoping this time I can get it right. He mentioned MFP.
I looked. I signed up. I logged. I was unded my 1200 daily calories by 340!!!!! No wonder it wasn't working. I was eating really good food. I wasn't ever hungry but I wasn't eating enough. ..
I am excited anew about my plan with renewed energy and confidence that I will get there. I "only" have 17-20 to lose but do car my only results have been so discouraging.
Thank you MFP for giving me the ah ha moment I needex