1. Grow or buy high quality. Skip most grocery store middle aisles, and avoid bakery and dairy.
2. Stay active.
3. Laugh often.
I'm a perimeter shopper myself. But I do stop at the dairy. Eggs, butter and high-fat yogurts are a mainstay of my diet. I especially like the Kerrygold butter as it is from grass-fed cows. A little pricey but delicious. It's so creamy and tasty that I can almost eat it by itself.
I like cheese too. Did I mention cheese? Not the disgusting individually wrapped process cheeses like Kraft but the real cheeses that you have to take home and cut up with a knife.