Most people make the same mistake over and over when on diet even though there are a lot of information available for them. It is not about little mistakes where you ate a slice of butter or fried food that was not in the diet plan, but bigger mistakes which leads to failure of your weight loss plan. You need to understand these mistakes so that you can overcome these errors.
Some people have a all or nothing attitude which complicated their diet plan that becomes impossible for them to maintain. They enter the kitchen, select everything that doesn't fit their plan and throw it in garbage. Planning to be the perfect dieter their plan may work for a week or a month. After that everything is ruined and they go back to local store and buy everything they threw into garbage and start gaining all the lost weight. If you are this kind of dieter then you need to stop this and start making small changes to what you eat so that you will have a slower but steady weight loss.
Another mistake people make is that they think dieting as a sacrifice. They start avoiding food they enjoy the most on their way to losing weight. But after achieving your target you get out of control and start indulging your favorite foods as you did not learnt to moderate eating bad food. The solution is to include a little of everything in your diet but in smaller quantities. Even chocolate.
Set realistic goals. You can lose 10 pounds in a day. Start with two pounds a week for a month. Some weeks you may more less weight, some weeks more or even you may gain weight. Keep progressing as this is natural and you will realize it as you keep track of everything.
There is no need to worry if you have made these mistakes. You can only achieve goal by learning from your mistakes. Be committed to your diet, learn to eat food in moderation and you will enjoy being a healthier person quickly than others.