OP I have no idea how old you are or if you're overweight for your height. nevertheless, I will say this. There are some fruits & veggies you should by organic because the pesticides are carcinogens and will eventually bite you in the ass.
Buy stevia or organic sugar, and use it sparingly. Look at everything you buy for the sugar content, sodium content, and carbs as well as fat. If a cereal has 23 grams of sugar get rid of it. That's way too much.
Stuff like carrots, potatoes and strawberries you need to buy organic. most other stuff like bananas and oranges, grapefruit, pineapples, etc are fine. Just make sure you thoroughly wash your fruits and veggies well.
As for meat, yes lean meat for sure, but if you can eliminate the red meat it would be better for you. Just make sure when you buy chicken you get the kind with no hormones, antibiotics, or additives. It will be clearly labeled.
Buy grass fed beef. Don't eat processed foods. They have no nutritional value, they are high in sodium,and nitrites and nitrates cause cancer. You can find bacon without the additives, and you can find hot dogs without nitrites.
Eat grains vegetables and beans that are high in fiber. Never eat white bread. Eat whole grain bread and eat as little as possible. Don't eat white rice, eat brown rice. Get some books on Mediterranean dietary habits. Avoid vegetable oils and go with Olive oil instead.
Go to farmers markets, go to Whole Foods, Trader Joes, and you'd be surprised but Costco has some really good stuff. Eat plain Greek yogurt and put your own fruit in it, or some honey. Free range chickens, eggs too.
It might sound expensive,but it isn't. Get into the habit. I spend about $45-$50 a week. Take vitamins, too. Avoid too much fruit juice that's really high in sugar. Get fresh squeezed OJ if you drink it. Snack on nuts like almonds walnuts & pecans and get away from the cashews and peanuts.
Altho, if you go to a good market you can find some delicious freshly made Peabut butter with no additives. Add some honey to it and it is delish!