i'm assuming you are male? what age are you? are you overweight?

male, 19 years, 177 cm, 220 pound

that's 5"8 and nearly 16 stone.... i reckon that's fairly overweight, right? (not good with measurements, sorry!)

to be honest it's probably a general weight problem, not a problem with breasts. it is likely that if you lose overall body weight then you will lose it everywhere - breasts included. you needn't make any huge lifestyle changes. eat sensible foods in sensible portions at mealtimes. incorporate gentle exercise into your daily routine. if you set yourself huge goals they are just going to be impossible to attain, so try to be realistic.

what is your diet like? have you ever dieted before? what kind of exercise do you do? surgery would really be a very final resort if exercise and diet don't work.