Half the battle of losing weight is figuring out how you are going to do it, and studies show that the best way is to start with a plan. When you have a plan you have a direction instead of just another dream goal which can make the difference in a successful diet and one that fails. Of course, the other half of the battle is coming up with a diet map that will work for you because you have to trick your body into not maintaining your weight but instead helping you to lose it.
The first thing to do is take a look at the calorie intake that you should aim at. Most people need around 2,000 calories per day in order to maintain their current weight, so you should figure on cutting down your intake to somewhere around 1,500 calories so that you lose one to two pounds every week. It can be tempting to go further and cut your calorie intake down to half, but this will only cause your metabolism to slow down which will make it hard to lose weight since your body will start storing fat instead.
Second, you need to get serious about your plan taking the time to measure out the amounts you will eat and the times you will eat. Simply making a frame for your plan allows you too much room to cheat or negotiate and rationalize your diet on a day to day basis, but if you make a plan every week for every day then you have something to stick to and chances are you will. Many people even end up loving the fact they never have to worry about their meals again since everything is planned out and ready to go for you.