It really depends on where you live. In NYC, I walk a ton, so I can eat a lot more than I would in the burbs. Otherwise, my advice is...
1. Keep a picture of you that shows you as overweight. Refer to it weekly, unless it makes you cry. Then look at it everyday instead.
2. Build muscle. It lets you eat more. I prefer to watch TV/Netflix and lift weights, use resistance bands. It keeps you fit and you can catch up on stuff you've missed.
3. Per others, keep your calories hovering around 2,000. Watch out for shitty foods. You know your vices. Cut back when you can.
4. Get a bit overweight? Use myfitnesspal to count calories for a few weeks. It will stop you from eating poorly.
5. Join a gym if you can.
6. Most important of all, you're doing this for YOU. Not for a significant other, not to impress those around you, but because you want to feel and look good.
My personal motivations include all of the above, plus my fathers weight issues, my divorce, and getting better abs than my daughters, who's stomachs are spider-webbed with the most amazing muscles. I'm jelly.