Imagine that you are on a beach with several other people. Each person has different swimming capability. One person is an expert swimmer who has been trained not only as a lifeguard, but also has participated in swimming marathons. Another person is a strong swimmer, though has no formal training. Yet another is an average recreational swimmer who occasionally hits the pool in the summer. And then there is you. You can do the dog paddle if you have to, but you really can't swim at all. In fact, your swimming skills are sufficiently weak that you feel uncomfortable swimming without a life jacket or flotation device.
When you go out for a swim, you're fine as long as you have your life preserver with you to help you survive the deep with your limited swimming skills. The other people that are watching you are initially understanding of your need for a flotation device, then they are mildly bemused. As time goes by, they encourage you to abandon your life jacket and attempt to learn to swim better. However, you are concerned that the environment you are swimming in, the ocean with its depth, undertows and currents, is not a place that you can learn to swim in without risk of drowning. The swimmers who are with you become critical and start to make judgmental assertions about your refusal to abandon your life preserver, but you simply cannot do so; at least you cannot do it now in this place. Perhaps in the right place, at the right time, with proper support and guidance, you will manage to become a better swimmer.
Recently, I read a thread in the popular weight loss support forum where a woman was critical of people who have difficulty losing weight. She said that the thing which she took issue with was that such people seemed "refuse to give up ANYTHING" (her caps). She was essentially saying that people who can't lose weight don't want to sacrifice food, time, effort, etc. to be at a lower weight. She was saying that she felt they wanted to have their cake and (especially) eat it, too.
My feeling about people who cannot make the sacrifices to facilitate their weight loss goal is that they are like the weak swimmer I describe in the first two paragraphs of this post. It's not that they don't want to give things up; it is that they simply cannot. They are not in a situation where they can make those changes. In many cases, they are barely "treading water" in their lives as it is and currently do not have the psychological and/or physiological mettle to make those sacrifices. If they do, they will, metaphorically speaking "drown".
I don't think people should be judged for their seemingly contradictory desire to lose weight and inability to give up whatever is necessary to achieve their stated goal. I think we all do our best to survive, and when I speak of "survival", I mean as much or more from the mental viewpoint as the physical one. If people can't make the sacrifices (throw away the life preserver), it's because they lack the proper environment, experiences or skills that would allow them to do so at this time. They may want to very badly, but it's simply not possible right now.
When such pat judgments are made of people, it really makes me angry. Even though I have been successful for nearly a year now (and "sacrificed" a great deal by many people's standards) and lost a lot of weight, I have not forgotten that I was incapable for many reasons of making these changes before. None of those reasons are related to a lack of desire to make sacrifices or a childish "demand" for cookies or treats that could not go unsatisfied. They were all related to an inability to do so due to circumstances in my life that were largely beyond any sort of reasonable control.