As a fitness trainer and health coach, I tell women to stop with the diets and change the letters in the word diet around to EDIT.
Edit what you eat instead. Make healthy choices most of the time, eat less processed and packaged and more real foods, plan your treats or indulgences, drink lots of water and move your body more.
Get exercise on your schedule every day and make sure you don’t sit the rest of the day. Look for opportunities to move your body more each day.
Consider a fitness tracker like a FitBit too, as fitness trackers encourage you to move more when you set a goal for how many steps you’d like to take in a day. Aim for 10,000 steps as that’s what the American Heart Association recommends.
Here's an article I wrote on this topic for EmpowHER