What is the best way to geta fit, aesthetic body?

Diet and exercise. There are no shortcuts to being fit. Proper diet and a program of exercise should be everyone's lifelong plan. Extreme diets fail in the end and surgical options except for morbid obesity are inappropriate. Calorie control is the difficult part and education about food groups and calorie content of specific quantities of foods are most important.
Exercise didisciplin. Proper diet moderation in food choices exercise2-3 times per week for at least 30minutes finally discipline your time to commit to maintaining a meaningful program.