I had a problem losing weight after my third kid. I had 40 lbs to lose after I had him. And I refuse to diet. He's three now and I lost 25 of it. I started with using smaller plates....sounds crazy, but you can't put as much food on a smaller plate and when I am comfortably full I stop, I used to eat everything that was on the plate so I didn't waste it. I snack throughout the day(not alot, just a little to keep me going inbetween meals. We don't eat out very much anymore.
I had some neck issues for a while and went to a chiropractor, and they gave me some simple exercises. One is doing crunches...and if it hurts to do crunches(I couldn't I was in too much pain)you can lay on your back and just imagine your are on a beach and push your lower back into the sand to make an impression. It works the same as a crunch and super easy. Little exercises like that should be done twice a day.
Slowly incorporate little things into your life.