There's a difference between maintaining and losing weight. We can try any diet technique we want when we lost weight as long as we have good results. Maintaining weight is similar to weight loss.
The concept of losing weight and maintaining weight are the same. What is important is to eat healthy, control the amount of food you eat at each meal and make daily exercise a part of your routine.
Part of being successful in weight maintenance is being motivated on an ongoing basis to keep from gaining additional weight. Also important is getting support from those around you and being able to handle stress without resulting to eating to much or eating the wrong foods. You must assume responsibility for your weight maintenance program.
What can cause weight regain? There are many contributing factors, one of them being having a history of cycling between losing and gaining weight. Another risk is overeating or eating in response to feeling bad about something.
Bottom line, maintaining your weight is balancing between how much energy you use and replinishing that burnt energy. To achieve this balance you need to know your own needs.
If you track your caloric expenditure during your workouts, you can then adjust your caloric intake accordingly to ensure you're replenishing but not overindulging.
Using a computer program to track calories burned and how many calories you can consume to maintain your weight taking into account calories burned is an excellent way to maintain your weight. When the computer program notices a change in your metabolism, it will adjust your daily calorie budget to prevent a weight loss or a weight gtain. Also the program should help you adjust your retention of water from high sodium intake, or in the case of women, menstrual cycles. A good program even know how to adjust if you skip logging food for a few days. one excellent program for this is called Diet Power.