Creating a more plant based diet

I just feel the need for change.  I am going to be 30 next September and I want to be in the best shape of my life and feel great when I turn the big 3-0.  I also just want to change my relationship with food and help my body to run on the best fuel possible.  I went on a food documentary kick this weekend and was inspired by the Engine 2 diet.  So I am taking his 28 day challenge but giving myself a cheat day on Christmas and New Years.  The challenge will officially start next week but I am trying to work more plant based foods into my diet this week so I will be more prepared.