Weight loss is often a numbers game.
There are 3,500 calories in a pound of fat..So, if you want to lose one pound you simply have to use 3500 calories more than you consume.
It is useful to think of this amount in 500 calorie chunks, working to burn 500 more calories than you eat every day. That way, you can easily shed a pound every week.
Your weight loss goals must be realistic. Just like most other things, if the goal is not realistic, you probably won't achieve it. If you also try to drop a large amount of weight in an unrealistically short period of time, set smaller weekly goals to help stay on track.Instead of doing this, give yourself more time and set a goal that you may be able to attain for that specific week. Don't look at what's going to happen in the big picture. Think about the weight loss instead.
If you want to lose weight, you have to stay active. Try not sitting at all during the day. Keeping on your feet burns calories and raises your metabolism to speed weight loss.
When we try to lose weight we often try to count calories, as if calories are the only reasons we are out of shape and unfit.
The numbers aren't the enemy, they can be a useful tool if you learn how to use information.
The link above has fitness information for all age groups.
The sooner you start, the sooner you start seeing results!