At 300 pounds, it is unlikely that CoolSculpting would make much of a difference. CoolSculpting is best for people who are at or near their goal weight who want to reduce small, stubborn fat bulges that don’t respond to diet or exercise. In limited cases CoolSculpting can be used to help provide a kick-start for a person wanting to make a lifestyle change, but generally it’s best to get near your goal weight before undergoing the procedure. CoolSculpting is not at all a weight loss tool. It instead helps to shape and contour the body. I recommend a lifestyle change with help from a nutritionist and personal trainer if necessary, then once you get closer to your goal weight, visit a board-certified dermatologist for a consultation to see if you are a candidate for CoolSculpting.