So, just a quick tip. Of course, there is always things like taking easy to eat veggies and fruit to snack on (such as baby carrots, celery, grapes...), but you were saying you work in an office and therefore don't get much physical activity at work. There are a couple things you can do to get in more activity at work. If you have an office job that has stairs, whenever you use the restroom always go to a different floor. Also, I was reading that there is something (I don't know what the web site is, but I'm sure you could research it) that you can buy and put under your desk and it's like pedaling on a bike while you're at your desk working! Also, fidget whenever you can, any type of movement helps to burn little bits of calories that all add up! Good luck!