i had lost 23 kgs in 3 months a while back...what i learnt was in order of priority
1.cut out on sugar , white bread, white rice ( all high glycemic stuff adds to your lard fast if not used)
2.eat fibre/salad/veggies - slow digesting food will keep you satiated.
3.rely on low calories snacks when hungry (almonds , chicpea etc)
4. 5 or more short meals just to satiate.
5.Try skipping dinner ( not always healthy though)
6. do any high intensity interval training in morning ( kicks metabolism --> after burn effect).
Note:dont avoid essential fats & proteins. carbs are not essential cut how much ever you can.
cheers