Some tips I used last time:
Eat until satisfied but not stuffed - slow down, relax, turn off devices and focus on what you're doing. Enjoy the food.
Drink lots and lots of water (tap will do)
Have a glass of warm water (cooled, boiled water) with the juice of a whole lemon before breakfast.
Drink green tea with breakfast.
Do not add sugar to anything. If sweetness in needed, use small amounts of pure honey or a plant based sweetener like Truvia.
You shouldn't feel hungry. If a snack is needed go for fruit - dried is good on the go (go steady as they're packed with natural sugar though).
A whole pound of strawberries is only 150 calories!
If you're still hungry you're probably dehydrated - have a drink of water, herbal tea or filter coffee.
Lose the café coffees. A Costa Cappuccino is over 150 calories!
Watch cooking oils. Don't use sprays (UPs), use small amounts of olive, sesame or avocado oil. They're high in unsaturated fats.
Bake, or grill, don't fry.
No protein powder, bars or shakes.
Nothing labelled as 'low fat' or 'diet'.
No bread sticks, crackers or cereal bars (including things like Ryvita).
No packaged breakfast cereals (except plain oats).
Kefir once a day (okay as it's medicinal for good gut health).
A high strength vitamin D supplement (I use the mouth sprays)
A natural iron supplement, like Spatone Water or Floradix.
Magnesium glycinate (essential for healthy muscles, nerves, bones and blood sugar levels).
Get outside in the sunshine and fresh air as much as possible.
It does take a little while to figure out e.g. tinned tuna okay, baked beans not okay. Plain natural Geek yogurt okay, flavoured fruit yogurt not okay. Plain salted butter okay, spreads and margarine not okay. Well worth the extra faff imo.