Starting... stopping... starting again...

My high school reunion is in July. 20 years ya'll! I can't beleive I'm going back to see these people I haven't seen in 20 years! So of course I have to look my best!
How can I? To be honest I'm only 20 lb heavier than I was in high school anyway. After 20 years, 2 kids, & a serious illness I think 20 lbs is forgivable. Unfortunately I don't just see 20 lbs. I'm still seeing the image of me in 2001 at my heaviest.... 234 lbs.
So I make up my mind to start working out again. I research the Couch to 5k program to get me running. I mentally promise to walk maybe 30 minutes a day. I mentally promise to do the Wii Fit thing every week. I even shop around for other workout material. At some point I will actually get serious about this & put those cookies down!