They say more than 90% of weight loss is diet so focus as much as you can on that (says I who struggle to do so).
Different things work for different people and you might have to try a few things to get the results you want.
And also remember that at the beginning your body is adjusting to change and it will retain fat and all sorts until it reprograms to your new schedule so to speak!

I am not very good at heeding my own wisdom but it is from a nutritionist.
Start by (if you are not already) making the only fluid you intake water. 1L per 30kg of body weight preferably, and more if you exercise.
Cut down your portion sizes and start eating six meals a day.
Kickstart this with something in the morning - even if it is half a banana, it gets your metabolism running.
Eat fruit or vege with EVERY meal (breakfast: omelette with onion, spinach, mushrooms etc, mt: yoghurt with banana etc...)
Try not to leave more then 2.5-3hrs between meals and eat things more rich in protein as it helps you feel full.
Don't worry so much about how late you eat before bed - your body needs that fuel... the longer it goes without food the more it hangs on to.

The last thing i got told was to minimise carbs unless it was after exercise. I cant do it. I have eaten pasta, rice, mash, sandwiches, rolls all my life. Cutting to just grilled meat and steamed veg with no mash/rice/pasta SUCKS. Good luck though!!

I recommend taking things one step at a time so you dont get overwhelmed by the changes. Once you have water going, then start something else.
Despite not losing weight, I felt good when i was following these principles, i lost centimetres and i could tell it was working. Remember to give it time!

And to try different things out, what works for me wont work for someone else!