Your body is perfect just as it is. It does not matter how it looks. It does not matter whether it is healthy or not. Your body is a temple of a divine light.
Develop a more optimistic view of life. See if you can deliberately generate the feeling of happiness regardless of external conditions. Take time to pray and give thanks to the Universe.
When you have a harmonious relationship with the Universe, you feel secure and relaxed. You are able to accept difficulties of life with equanimity.