Ugh, some peple are so judgemental. They say "Eat less, move more - it's that simple, people!"
Er, no it's not. First of all a lot of people have physcological issues that need to be addressed before they can get in the right frame of mind to lose weight and even despite that - there are many other issues at play. You can follow a 1200 calorie a day diet and of the calories are mainly made up of refined carbs, satured fat aka the wrong foods, it will not be as easy to lose weight as it would if you were eating 1200 cals a day of the right foods. And not everyone is well versed in "the right foods".
I wish people would realise that just because something applies to them does not mean that it applies to everyone. People are different and their bodies do work differently.
That is why the worst anti-smoking preachers are reformed smokers, the most close minded anti-fat decriers are people who used to be a bit overweight and have lost weight. You see, they think "Well, I did x, y and z and it worked for me so it should work for everyone" but as most of us know, just because something worked for one person does not mean it will invariably work for everyone.