If you are trying to lose weight, and failing here are some reasons that are probably contributing to it.
1) You are eating more than you think
Over the last fifty years portion sizes have increased dramatically. Have you seen pictures of what “large” meant even 20 years ago? What is now a small is larger than what used to be a large. Research has shown repeatedly that we will eat what is put in front of us regardless of the size. The more we eat at every meal, the more we can handle and its a spiral effect.

2) What exactly are you drinking?
Are you drinking water? Or more juice, pop, beer, gatorade, et al? On average 1/4 of Americans calories come from DRINKS. Stick to water or diet pop.

3) How much are you sleeping?
People that get enough sleep every night eat less. Not to mention staying up ultra late is just begging for late night snack food.

5) Are you eating enough?
Eating too little will put your body into starvation mode and you will actually burn LESS calories a day. Not only that but you will feel worse, killing motivation.

6) Are you eating OFTEN enough?
Eating more (small) meals will stoke your metabolism and help you feel fuller, longer. You are less likely to eat badly and less likely to gorge yourself when you do eat. Aim for 5-6 small meals a day.

7) Are you eating breakfast?
People who eat breakfast succeed dieting almost 70% more than people who do not eat breakfast according to one study. Breakfast is the pillar of your day. You want to consume the MOST calories at breakfast of any meal, it is your fuel for the day.

Are you eating the RIGHT foods?
Eating 1400 calories a day in junk food will not help you lose weight. This will cause spikes in your blood insulin levels which will in turn cause you to both store more fat AND go into starvation mode. The worst of all worlds! Try to cut out any high glycemic carbs including white flower and sugar.

You might also be interested in some tips to lose weight and feel great (ha).