Many people who are overweight believe they cannot lose weight. Sometimes one might say it out loud, or hear friends say it about themselves. For other people this belief stays in the subconscious. But it is sure that it influences our behavior. Someone who believes it is impossible to lose weight will be constantly battling their own negativity when trying to diet. The mind will be constantly saying there is no point dieting, you cannot lose weight so you should just go ahead and eat everything one wants. Visualization is the strongest technique that we can use to overcome these negative thoughts and impulses.