I have a question about weight..?

Okay, here it is. I'm 19 years old, 5'2", and 240 pounds. I have gone to the doctor before because I was worried about my weight, she told me that all my bloodwork is fine and that I for being obese I am quite healthy. But I still want to lost weight, so if anyone has any suggestions on losing weight around your stomach and thighs it would be much appreciated. Thanks.