Kudos for focusing on cooking. It really changed my life when i started focusing on things like making bread, growing my own vegetables (at least to supplement store-bought), and learning the science and history behind foods/meals. I lost about 10 pounds just by learning how to cook and gaining an understanding of portion control and managing salt/nutrition levels. Also, I'm pretty confident my daycare-enrolled kids are less sick than their classmates who eat out one or more meals daily or are reliant on the bag of chicken nuggets and yellow-weird mac and cheese.
check out these youtube channels for some motivation (which i've picked up here on HN): https://www.youtube.com/user/BrothersGreenEats, https://www.youtube.com/channel/UCPzFLpOblZEaIx2lpym1l1A. Also, I recently fell upon Alton Brown's new Good Eats Reboot... good stuff.