Keep it simple.....basic rules that worked for me [with a lot of exercise which you cannot avoid]...I have lost 10 kilos and 5 inches in 5 months
One Roti at lunch and One Roti for dinner.
Eat any amount of vegetables...potatoes, beets, arbi, suran do not count [just cut out all the starchy stuff...not rocket science]. And by this I mean regular sabzi..I do not have anything special cooked for me. So I eat a lot of sabzi with just one roti.
No sugar in tea or coffee at all.
No Mithai or chocolates or icecream...basically no sweets.
No fried stuff..so no samosa/ kachori/ farsan/ bhajiyas...etc
If you are a non vegetarian....eat any amount of meat as long as it is not fatty...preference is simple Fish>chicken>mutton>beef>pork [if your religion permits you to eat the latter two]
I have done 1or 2 eggs a week and that has not killed me.
For breakfast I eat a handful of soaked Moong with lemon and salt + one bowl of Muesli with standard milk.
I carry small packets of fruits/ roasted chana [chickpeas]/ nuts [not peanuts] to office and eat every 2 hours or so.
that is all...obviously one has to avoid oily food...that goes without saying.