You need to apply some science, work out what your maintenance calorie level would be, for instance the amount of calories you eat on average that for your energy expenditure would make you remain at your current weight if activity level stayed the same. Then reduce calories and add more activity. The simplest and most painless way is to record everything you eat, slowly reduce calories and start up weights again and do some walking.
I don't always have time to walk places for the hell of it, so I walk at lunchtimes whilst eating my lunch, instead of sittin on my ass in the canteen or suchlike. Doesn't matter that I am walking and eating, still makes my daily calorie expenditure higher and typically I walk for 30 mins per day, unless I did squats when I just sit still and try and do as little as poss.