1. Downsize it!
Order a small instead of a medium. Go for the smaller-sized tortilla instead of the large. Grab a smaller handful of nuts. All these little changes add up in big ways!
2. Avoid the fat.
Fat calories add up quickly, so cut them when you can. Buy tuna packed only in water. Skip the oil entirely if you're sautéing onions or mushrooms. Use herbs and spices for flavor instead