What is the Best Surgical Option for Unmarried, 20 Yr Old with BMI of 39?

I am 20 yr old unmarried female with issue of obesity all my life. I have tried every possible non surgical option one can think of including dieting, exercise, Ayurvedic, homeopathic alternative with no success. I have been obese all my life with genetic predisposition since both my parents and sister are obese but nothing like me! Rest assured, we all are in healthcare industry and are very good with diet and exercise. I am TIRED now and need surgical option- what is best option for me?

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