Keep a food diary. Record everything you eat for a week. Don't change anything for a week.
Use a calorie counter to add up daily calories.
Try to identify sugar, fat, protein, and fibre content of everything you eat. You're going to eat more protein and fibre and decrease fats and sugar.
Count your steps for a week too. Don't do anything extra.
You'll use those numbers as your base lines.
Weigh yourself every morning after you've used the loo.
Make a mood board. You can use Pinterest for this or use a cork board and pics from magazines.
On your mood board you can post images of future slimmed down you. You will see the clothes you'd like to wear, the habits you'd like to have. You can post motivational quotes for yourself. You can refer to it when you're hearing that packet of Oreos calling your name.
Don't be discouraged by slow loss.
Break your goal into chunks.
Five lbs at a time is doable, fourteen is not.
Aim to reduce sugar and fats first.
Identify current foods high in these and identify foods you can replace them with.
Crisps can change to rice cakes or light popcorn. You can gradually eliminate these too, over two or three weeks.
You should aim to build up fibre and vitamin rich foods at all meals.
Be disciplined about having veggies every day. Start with two servings. Veggies that can be incorporated into other foods are useful here - a big pile of spinach can be thrown into a lot of meals and sandwiches.
Carrots dipped in hummus are a crunchy and filling snack.
Add more beans and peas/ lentils to your meals. Five times a week is something you could aim for.
Don't forget that soups can be filling and healthy. Buy chicken stock (don't rely on stock cubes, which have no actual chicken in them) and make some soups with beans, veggies. There are lots of recipes online.
Switch to whole grain breads. Look at the packaging and don't buy breads with added sugar. Whole grains should be the first ingredient.
You will find yourself feeling full when you get more fibre rich veggies, whole grains, and beans daily.
Lean meats should replace a good deal of sausages, bacon, etc that you may currently eat.
Try to add more fish, lean meats, beans, and veggies to your dinners. For starch, look at quinoa, replace white rice with brown (a rice cooker or instant pot will help a lot to cook it properly), replace white pasta with whole grain pasta. Sweet potatoes offer carbs plus vitamin A and fibre. Your starch portion should be a quarter of your plate.
Try to eat a healthy lunch. If you normally have a bought lunch at work, look for healthy options. If possible, cook and slice your own meats for sandwiches. You can add lots of lettuce, tomatoes, spinach, pickle slice, low fat cheese, etc to a sandwich. Eggs are good too. Tuna is great.
Look for cheese with lower fat content - mozzarella, provolone, parmesan, Swiss are good choices. Avoid higher fat cheese except in small amounts.
Switch to skimmed milk.
Avoid sugar laden breakfast cereals. Aim for a filling breakfast. Scrambled egg on whole grain toast will set you up for the morning. Same goes for low fat Greek yogurt and whole grain toast. Porridge made with skimmed milk is another filling breakfast that's good for you. You could add a little sugar and a shake of cinnamon or some stewed apple.
Eliminate sweet drinks (squash). Eliminate fruit juices. Eliminate soda. Replace with fizzy water if you like the fizz. Eliminate coffees that are loaded with sugar and fats - all those Starbucks style fat bombs..
Decrease alcohol.
Eliminate sweets, cakes, cookies. There's no way around that. You can have a small amount of dark chocolate once a day. No raisins or other dried fruits that are very sugary, sometimes with added sugar.
If you normally have dessert, make sure it's a home made one. You can usually decrease the sugar in any given recipe by one third without noticing a difference. Try to cut down desserts all the same. Fruit can substitute.
Stop buying biscuits and crisps. Jf you don't have them to ha d they're easier to avoid.
Increase your walking. Do you have stairs at work?
Lift hand weights when you're sitting on the couch in the evening. Start light and increase.
Get to bed half an hour earlier.