Here's how I lost my baby weight - 90kg down to 65kg (size 10). I still mostly eat this way and I'm so much healthier in my 40s than ever before.
Number one is Attitude: losing weight is going to be a Pampering Experience and you're going to be a bit 'selfish' and allow yourself nice things. Spoil yourself!
Cut out sugar and fried food and white starchy stuff. Don't drink alcohol.
Buy good thick wholegrain bread just for you, keep it in the freezer, toast it one slice at a time (for when you want an egg, for example). (Spoiling.)
Get your protein up up up, it will stop you feeling hungry. Even your snacks can have protein! I love edamame.
Drink lots of water, if you hate this, buy yourself sparkling mineral water and keep lemon slices in the fridge, just for you. It really helps to stop false hunger pangs. (Spoiling)
You don't have to count calories, but it helps to have a list of easy things that you usually eat and just know roughly what they're worth. You can play with an app like MyFitnessPal or just Google.
I have never been a breakfast person, but I force myself to have lunch, so I'm not too hungry to wait for dinner.
Every meal is a PILE of vegetables (not potatoes!) and some lean meat or fish. Salads, stir fries, and so on. You are saving money on bread and sugary stuff, so DO buy lots of exotic fresh veg and that nice steak just for you. (Spoiling).
Having a plan every day for what you will eat is crucial - I poach a couple of chicken breasts at a time, so there's always the option of a chicken salad in minutes. I make a big batch of soup every week so I have easy lunch every day.
If you plateau, and you know your calories are really low, have a reset day. About once a week, have something carby, and fatty, and a lot of calories at once. It stops your body from panicking. My "refeed" meal is a Big Mac. 
My easy way to a lean tum was buying one of those cheesy "as seen on TV" ab rockers (second hand). They do take the strain off your back and neck and make you do your crunches correctly.
My final tip is that I always mentally add "for the rest of my life" when I write out any habits I decide I want to build. If it makes no sense, I have to rework it until it does.
Good luck OP!