You have a body image. It is image in your head of your body. It may be good, bad, or distorted.
A person's body image does not always fit what society portrays as attractive or the subjective opinions of others. Some people have a image of their body that is actually better looking than their body. Why else would some of those people wear bikinis on public beaches? Others may have a poor body image and be considered very attractive by others.
Extreme criticism of one's own body is characteristic of Body Dysmorphic Disorder, which involves a distorted body image. Women often express negative feelings about both individual body parts and their bodies as a whole. And the desire to lose weight is highly correlated with poor body image. Often the woman does not need to lose weight and needs to gain some weight. Exercise habits, sexual experiences, and mood also influence the feelings people have toward their bodies. Men's body image often involves the desire for additional muscle has been linked to many men's concepts about masculinity. Muscle and masculinity may begin early in life, as boys' action figures are often depicted as super-muscular. Muscle dissatisfaction has been linked to low self-esteem and is related to the use of muscle-building supplements and anabolic steroids.
Life is too short to obsess over body image. Develop and maintain a healthy weight and muscle tone. And keep a positive image of your body.