Only shop the outside of the grocery store steer clear of the inside aisles (that is where they stock most of the processed foods)
Ditch the extra calorie drinks (soda, juice, bottled tea, lattes, energy drinks, sports drinks, ect...)
If you are going to have wine don't eat food with it. And if you do than only have green leafy veggies to counter the high acidity of the wine
Plan ahead and pack smart snacks for trips both long and short.