Planning is the key - same as you have done with your bills!
Meal planning here - include lunches and snacks so you have it all covered and be realistic - perhaps book a coffee/cake date instead of lunch out and schedule one takeaway say per fortnight/week so you do not feel deprived.
We have more play dates at parks/beach etc than cafes which we used to all the time -much better for the kids too.
I joined the library and DVD shop rather than buying both - also we have upgraded our antenna so are cancelling pay tv as we watch the new freeview channels more than the pay tv.
Good luck - in the end most of it was me sticking to the plan in the end. Remember to factor in other things like clothes/haircuts otherwise you may feel deprived and go overboard!