Starting a habit again

I am feeling the dread to follow my exercise and eating regime. I started to exercise this week again after taking a rest last week because of my flu. I wanted to exercise on Mon, wed and fri lunch time; and after my exercise, I will eat minimally like having a cup of milo with cereal and some biscuits. On top of that, I will eat minimally for the other meals, choosing to eat a smaller portion and choosing noodles or bee hoon over rice for lunch. I also told my mum that I wouldn't mind a few slices of bread for breakfast and less rice for dinner... I am stopping myself from eating more than I should. So my guiding principle is to eat to ease my hunger and not to be full (learnt from an article from Newspaper). All good food now has to stop when the signal comes... sob, sob
All these for the purpose of losing weight and staying healthy. My weight has passed the ideal range even though I don't look overweight (kept assuring myself that it is my heavy bones not my fats) I learnt that in order to lose weight, I have to take in lesser calories and exercise to shed more calories. I need to keep a minimum calories input daily if not my body might decide to store more fats when I eat again thinking that famine might happen again... haha what a great creation.. So dieting isn't a good choice... Plus I want a healthy body so I need to take in what it needs.
The result after 4 days, my weight seems to drop a few hundred grams... haha.. good start..but it isn't easy to keep this regime.. The weight loss will be significant initially but I expect it to be lesser after a while. I hope I can still persevere on. The last time I tried this regime, I managed to shed 2-3kg... That was before my wedding.. I regained those after my flu, honeymoon and CNY. So sad... Praying for God's strength as I try my best to take care of this temple of God. Friends, do stop me if you find me indulge in food unnecessarily. My wish is to lose 10kg