However much you might wish to change them, some aspects of your appearance were determined at conception. Ectomorph or endomorph (i.e. small or large boned), general build, and so forth. Working out will make you fitter and, according to what you choose to do, improve muscle tone and size, maintain flexibility and a strong cardio system for sport. So maybe there is no such thing as an "ideal" body image, but you can for sure make a good effort at maintaining your body's health and fitness - and then (by definition) your general appearance.  All of today's choices here faced the same challenges, but appear satisfied with what they have. Always - "tomorrow a little better" is a very good motivation to keep up your training - at a sensible level consistent with your general lifestyle, of course.