I've had good luck with lean meats, veggies, low carbs (using a food scale), and I doubled up my treadmill time to 2 hours per day. That's when the weight started coming off (I started at a normal BMI, so it was harder to lose). I don't recommend processed food because I believe it causes health problems. But if you don't have time prep your meals at the beginning of the week, use lean cuisine type dinners. They have the calories pre-packaged  for you. All you have to do is get your TDEE and make sure you are 400-500 calories under that for your daily intake. Additionally, some people find it helpful to choose a 7 hour window during the day and eat only during that time. Anyway that's what worked for me.