Consider joining a local sports club or class if you're having problems with losing weight. Zumba classes are very popular right now, and you shouldn't have a hard time convincing a friend or family member to join you. This makes working out fun and will make you more likely to turn exercising into a habit!
You may be tempted, when trying to lose weight, to cut fat out entirely. But it's important to remember that fat has a high satiety value in foods, so a little will go a long way. Case in point: baked potato chips may have no fat, but because of that, they don't trigger your satiety level as quickly as regular or even the "fat-free" Olestra chips do. So, you're tempted to eat the whole bag. Better, for example, to eat a small amount of high-quality, high-fat food - let's say, a small high-end dark chocolate bar - then to gorge on large quantities of low- or non-fat foods. You'll be more satisfied without having to say "No" to treats.