Try to exercise everyday and ensure that you burn more calories than you consume. Often a 30-45 minute session of aerobic activity 4 to 5 times a week is adequate. Jogging, swimming, cycling, dancing, roller skating and dance or step aerobics are all great ways to have fun and keep those inches off. Try to substitute what you eat. Most health experts caution you against eating out.
Commercial food is high in fat and calories and low on nutrition.
But eating out is at times unavoidable. At such times learn to be sensible, select the less fattening and more healthy food like substituting a roast chicken or chicken tikkas for the fattening butter chicken etc. It's amazing how much you can actually control in terms of calories with a little bit of thought. Try to incorporate weight training into your exercise routine. Two to three times a week weight training is adequate to maintain your lean body mass and increase your metabolic rate as well.